Race, Ethnicity, and Pain among the U.S. Adult Population

45
Race, Ethnicity, and Pain among the U.S. Adult Population Vickie L. Shavers Alexis Bakos Vanessa B. Sheppard Journal of Health Care for the Poor and Underserved, Volume 21, Number 1, February 2010, pp. 177-220 (Article) Published by The Johns Hopkins University Press DOI: 10.1353/hpu.0.0255 For additional information about this article Access Provided by your local institution at 05/16/11 8:50AM GMT http://muse.jhu.edu/journals/hpu/summary/v021/21.1.shavers.html

Transcript of Race, Ethnicity, and Pain among the U.S. Adult Population

Race, Ethnicity, and Pain among the U.S. Adult Population

Vickie L. ShaversAlexis BakosVanessa B. Sheppard

Journal of Health Care for the Poor and Underserved, Volume21, Number 1, February 2010, pp. 177-220 (Article)

Published by The Johns Hopkins University PressDOI: 10.1353/hpu.0.0255

For additional information about this article

Access Provided by your local institution at 05/16/11 8:50AM GMT

http://muse.jhu.edu/journals/hpu/summary/v021/21.1.shavers.html

Journal of Health Care for the Poor and Underserved 21 (2010): 177–220.

Part 2: Literature review

race, ethnicity, and Pain among the u.S. adult Population

Vickie L. Shavers, PhDAlexis Bakos, PhD

Vanessa B. Sheppard, PhD

Abstract: introduction. There is reliable evidence that racial/ethnic minorities suffer dispro-portionately from unrelieved pain compared with Whites. Several factors may contribute to disparities in pain management. Understanding how these factors influence effective pain management among racial/ethnic minority populations would be helpful for developing tailored interventions designed to eliminate racial/ethnic disparities in pain management. We conducted a review of the literature to explore the interaction between race/ethnicity, cultural influences; pain perception, assessment, and communication; provider and patient characteristics; and health system factors and how they might contribute to racial/ethnic disparities in receipt of effective pain management. Methods. The published literature from 1990–2008 was searched for articles with data on racial/ethnic patterns of pain management as well as racially, ethnically, and culturally-specific attitudes toward pain, pain assessment, and communication; provider prescribing patterns; community access to pain medications; and pain coping strategies among U.S. adults. results. The literature suggests that racial/ethnic disparities in pain management may operate through limited access to health care and appropriate analgesics; patient access to or utilization of pain specialists; miscommuni-cation and/or misperceptions about the presence and/or severity of pain; patient attitudes, beliefs, and behaviors that influence the acceptance of appropriate analgesics and analgesic doses; and provider attitudes, knowledge and beliefs about patient pain.

Key words: Race, ethnicity, pain, health disparities.

The Institute of Medicines’ report Unequal Treatment: Confronting Racial/ethnic Disparities in Health Care specifically focused attention on the lower quality of

care received by members of U.S. racial/ethnic minority groups,1 as did the National Healthcare Disparities Report issued by the Agency for Health Care Research and Qual-ity (AHRQ).2 The poorer quality of care received by racial/ethnic minority patients

Dr. ShaverS is in the Division of Cancer Control and Population Sciences, Applied Research Program, at the National Cancer Institute (NCI). Dr. BakoS is in the Center to Reduce Cancer Health Dispari-ties, Diversity Training Branch, at NCI. Dr. ShepparD is at the Lombardi Comprehensive Cancer Center at Georgetown University. Please address correspondence to Vickie L. Shavers, National Cancer Institute, Div. of Cancer Control and Population Science, Applied Research Program, Health Service and Economics Branch, 6130 Executive Blvd., MSC-7344, EPN Room 4005, Bethesda, MD 20892-7344; (301) 594-1725; [email protected].

178 Race, ethnicity, and pain

in general3–6 and in the receipt of appropriate pain management specifically have also been the focus of several other recent reports.7,8

For the purpose of the current discussion, race is defined as a continuously evolving social construct. Race, in the current social context, has several dimensions includ-ing physical characteristics (e.g., skin color, hair texture, other distinctive charac-teristics), culture (e.g., belief systems including religion and spirituality, attitudes, and group behavioral norms and expectations) and self-identity.9 Ethnicity refers to cultural groupings that have been traditionally defined by a common language, religion, nationality, or heritage. In the U.S., racial/ethnic minorities represent those groups of individuals not classified as non-Hispanic Whites. Racial/ethnic minority groups constituted about one third of the U.S. population in 2005. By 2050, racial/ethnic minority populations are expected to constitute 50%, a fact that highlights the current and future significance of racial/ethnic disparities in health.

Several factors may contribute to disparities in pain management, including physician patient interaction and practice styles,10 prescribing behaviors, patient perception, previ-ous experiences with pain, attitudes, beliefs and behaviors regarding pain, and patient access to care and to effective analgesics. Understanding how these factors influence effective pain management among populations would be helpful for developing tailored interventions designed to eliminate racial/ethnic disparities in pain management. We conducted a review of the literature to explore the interactions among race/ethnicity and cultural influences; pain perception, assessment, and communication; provider and patient characteristics; and health system factors and how they might contribute to racial/ethnic disparities in receipt of effective pain management.

Methods

PubMED, CINAHL Plus and Scopus databases were searched for the period 1990 to 2008 using the following key words and/or key word combinations: race, ethnicity, pain, pain treatment, pain assessment, pain communication, culture, pain disparities, religion and pain, spirituality, minorities, and racial differences. To obtain information on the role of cultural influences, we specifically searched for articles that described cultural traits of the various race/ethnic groups (i.e., African American, Hispanic/Latino, Asian, Pacific Islander, Native American, American Indian). The sensory, emotional, mental, behavioral, and social dimensions of the Biopsychosocial model of pain were used to inform the literature search on cultural influences on pain (Figure 1).11 The published literature was also specifically searched for articles that provided data on racial/ethnic patterns of pain management as well as studies that examined race/ethnicity and pain perception, assessment, and communication; provider prescribing patterns; and com-munity access to pain medication among U.S. adults.

Articles that provided empirical data on racial/ethnic patterns of pain management published before 1990 were not reviewed in favor of more recent treatment patterns and practices. We also did not review articles that did not include U.S. populations, were not published in English, or that were not relevant to the aforementioned areas of investigation.

179Shavers, Bakos, and Sheppard

results

One hundred eighty-seven articles (187) and/or other sources of information are cited in this manuscript. Thirty-four studies that specifically examined racial/ethnic variation in pain perception and management are summarized in Table 1, 11 studies that examine racial/ethnic variation in strategies or methods of coping with pain are summarized in Table 2, and six studies that examine race/ethnicity and pain assessment are sum-marized in Table 3. Other reviewed literature includes qualitative and ethnographic studies that provide background on cultural aspects of specific racial/ethnic groups and are not summarized in the tables.

racial/ethnic disparities in pain management. There is fairly consistent evidence that racial/ethnic minorities suffer disproportionately from unrelieved pain compared with Whites.12–24 Racial/ethnic minority patients are less likely than White patients to receive any pain medication,13,17,25,26 more likely to receive lower doses of pain medi-cations,19 more likely to have longer wait times to receipt of pain medication in the emergency department,14,27 and less likely to receive opiates as treatment for pain12,13,16,20 despite higher pain scores,13 and to be treated in manner consistent with the World Health Organization recommendations.19 They also are treated in pain clinics,28 under hospice care, 29 and have pain needs adequately met while in hospice care30 less fre-quently than Whites. Racial/ethnic disparities in pain management have been observed in a variety of settings including hospital emergency departments12–14,20,21,23,24,31,32 and nursing homes17,26 (though not in all studies33).

Although the prevalence of racial/ethnic disparities in pain management among

Biological factors

Tissue damageGenetic factors

Endogenous pain inhibition

Sociocultural factors

EthnicityFamily history

Cultural Factors

Psychological factors

Negative mood (anger, anxiety, depression)

Coping strategiesSocial learning

Figure 1. Biopsychosocial Model of pain.

tabl

e 1.

St

uD

ieS

eXa

MiN

iNG

ra

Cia

L/et

HN

iC v

ar

iati

ON

iN

Pa

iN M

aN

aG

eMeN

t a

ND

Per

CeP

tiO

N

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

rac

ial/e

thni

c di

spar

ities

in p

ain

12. P

letc

her

et a

l., 2

008

374,

891

pain

re

late

d ED

visi

ts,

AA

(22%

), H

ispan

ics (

11%

), A

sians

/oth

ers

(2%

), N

HW

(66%

)

Ana

lysis

of c

ross

-sec

tiona

l su

rvey

dat

a. N

atio

nal H

ospi

tal

Am

bula

tory

Med

ical

Car

e Su

rvey

fo

r (19

93–2

005)

Foun

d no

evi

denc

e th

at d

iffer

entia

l opi

oid

pres

crib

ing

by

race

and

eth

nici

ty d

imin

ished

ove

r tim

e am

ong

patie

nts w

ith

pain

rela

ted

emer

genc

y de

part

men

t visi

ts. O

ver t

he 1

3 ye

ar

perio

d 31

% o

f NH

Ws (

95%

CI 3

1%–3

2%),

23%

of A

As (

95%

C

I 22%

–24%

), 24

% H

ispan

ics (

95%

CI 2

3%–2

6%) a

nd 2

8% o

f A

sian/

othe

rs (9

5% C

I 26%

–30%

) rec

eive

d op

ioid

s. D

iffer

ence

s be

twee

n ra

cial

/eth

nic

grou

ps in

crea

sed

with

pai

n se

verit

y.

13. C

hen

EH

et a

l., 2

008

N5

981,

AA

(607

), N

HW

(326

), O

ther

(4

6)

Seco

ndar

y da

ta a

naly

sis o

f dat

a fr

om a

pro

spec

tive

coho

rt st

udy

on o

f acu

te a

bdom

inal

pai

n in

the

emer

genc

y de

part

men

t col

lect

ed

4/5/

2004

–1/4

/200

5.

AA

s wer

e le

ss li

kely

than

NH

Ws t

o re

ceiv

e op

ioid

ana

lges

ics

as tr

eatm

ent f

or a

bdom

inal

pai

n aft

er a

djus

tmen

t for

gen

der,

tria

ge c

lass

, pai

n sc

ore

and

age

(OR

0.69

, 95%

CI 0

.53–

0.90

). Th

ere

wer

e no

sign

ifica

nt ra

cial

/eth

nic

diffe

renc

es in

the

rece

ipt o

f a n

on-o

pioi

d an

alge

sic.

14. E

pps e

t al.,

20

08N

523

4, N

HW

, A

A, a

nd H

ispan

ic

patie

nts

Revi

ew o

f med

ical

reco

rds o

f pa

tient

s tre

ated

for l

ong-

bone

fr

actu

res a

t 2 G

eorg

ia h

ospi

tals

½/2

001–

12/3

1/20

03.

Hisp

anic

pat

ient

s had

sign

ifica

ntly

long

er w

ait t

imes

(102

m

in) t

o re

ceip

t of t

he fi

rst d

ose

of a

nalg

esia

com

pare

d to

Whi

tes (

67 m

in) d

espi

te a

ll re

port

ing

subs

tant

ial p

ain

(p5

.011

).

15. C

intr

on

et a

l., 2

006

Not

Ava

ilabl

eLi

tera

ture

Rev

iew

1/1

/90–

12/3

1/05

.A

fric

an A

mer

ican

s and

Hisp

anic

s wer

e fo

und

to b

e le

ss

likel

y to

rece

ive

opio

id a

nalg

esic

s and

mor

e lik

ely

than

Whi

te

patie

nts t

o ha

ve th

eir p

ain

untr

eate

d in

11

of th

e 17

stud

ies

revi

ewed

.

(Con

tinue

d on

p. 1

81)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

16. C

hen

et a

l., 2

005

N5

397,

AA

(178

), N

HW

(219

)C

ross

sect

iona

l sur

vey

of p

atie

nts

with

chr

onic

non

-can

cer p

ain

from

12

acad

emic

med

ical

cen

ters

7/

2002

–3/2

003.

AA

s had

hig

her p

ain

scor

es th

an N

HW

S. H

owev

er, N

HW

s w

ere

signi

fican

tly m

ore

likel

y th

an A

As t

o be

taki

ng o

pioi

ds

to tr

eat t

heir

chro

nic

pain

(OR

2.67

, 95%

CI 1

.21–

4.15

).

17. B

erna

bei

et a

l., 1

998

13, 6

25 c

ance

r pa

tient

s age

651

di

scha

rged

from

a

hosp

ital t

o ot

her

care

faci

lity.

AA

(7

.6%

), H

ispan

ic

(1.2

%),

NH

W

(88.

3%),

Asia

n (0

.8%

), A

m In

dian

(2

.0%

)

Ana

lysis

of 1

992–

1995

dat

a fr

om th

e Sy

stem

atic

Ass

essm

ent

of G

eria

tric

Dru

g us

e vi

a Ep

idem

iolo

gy (S

AG

E) d

atab

ase.

Patie

nts a

ged

85 y

ears

and

old

er w

ere

less

like

ly to

rece

ive

mor

phin

e or

oth

er st

rong

opi

ates

than

thos

e ag

ed 6

5 to

74

year

s (13

% v

s 38%

, res

pect

ivel

y). I

ndep

ende

nt p

redi

ctor

s of

faili

ng to

rece

ive

any

anal

gesic

age

nt w

ere

min

ority

race

(OR

1.63

, 95%

CI 1

.18–

2.26

for A

fric

an A

mer

ican

s), l

ow c

ogni

tive

perf

orm

ance

(OR

1.23

, 95%

CI 1

.05–

1.44

), an

d th

e nu

mbe

r of

othe

r med

icat

ions

rece

ived

(OR

0.65

, 95%

CI 0

.50–

0.84

for 1

1 or

mor

e m

edic

atio

ns).

18. C

leel

and

et a

l., 1

994

N5

1308

Retr

ospe

ctiv

e an

alys

is of

dat

a on

pat

ient

s fro

m th

e Ea

ster

n C

oope

rativ

e O

ncol

ogy

Gro

up w

ith

met

asta

tic c

ance

r 10/

1990

–9/1

991.

Min

ority

pat

ient

s wer

e sig

nific

antly

mor

e lik

ely

than

Whi

te

patie

nts t

o ha

ve th

eir p

ain

unde

r tre

ated

(OR

3.1,

95%

CI

1.7–

5.5)

.

(Con

tinue

d on

p. 1

82)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

19. C

leel

and

et a

l., 1

997

N5

197

Patie

nts w

ere

draw

n fr

om 9

un

iver

sity

canc

er c

ente

rs (2

6%),

17

com

mun

ity h

ospi

tals

and

prac

tices

(4

1%),

and

4 ce

nter

s tha

t prim

arily

tr

eat m

inor

ity p

atie

nts (

33%

). St

udy

date

s not

pro

vide

d.

Sixt

y-fiv

e pe

rcen

t of m

inor

ity p

atie

nts d

id n

ot re

ceiv

e gu

idel

ine-

reco

mm

ende

d an

alge

sic p

resc

riptio

ns c

ompa

red

with

50%

of n

on-m

inor

ity p

atie

nts (

p,.0

01).

Hisp

anic

s re

port

ed le

ss p

ain

relie

f and

had

less

ade

quat

e an

alge

sia

com

pare

d w

ith o

ther

race

/eth

nic

grou

p pa

tient

s. Th

e pr

opor

tion

of p

atie

nts w

ho h

ad p

ain

and

nega

tive

Pain

M

anag

emen

t Ind

ex sc

ores

diff

ered

sign

ifica

ntly

am

ong

the

type

s of i

nstit

utio

ns (m

inor

ity v

s non

-min

ority

). Pa

tient

s who

w

ere

trea

ted

at c

ente

rs th

at p

rimar

ily sa

w A

fric

an A

mer

ican

an

d/or

Hisp

anic

pat

ient

s who

wer

e tr

eate

d at

uni

vers

ity

cent

ers w

ere

mor

e lik

ely

to re

ceiv

e in

adeq

uate

ana

lges

ia

than

wer

e th

ose

who

rece

ived

trea

tmen

t in

non-

min

ority

co

mm

unity

trea

tmen

t set

tings

(77%

com

pare

d w

ith 5

2%;

p5.0

03).

20. H

eins

A

et a

l., 2

006

N5

1360

Retr

ospe

ctiv

e co

hort

of p

atie

nts

with

non

-mus

culo

skel

etal

pai

n 18

1 tr

eate

d in

the

emer

genc

y de

part

men

t. St

udy

cond

ucte

d ov

er

unsp

ecifi

ed 8

wee

k pe

riod.

Patie

nt a

ge, r

ace,

and

type

of p

ain

and

the

phys

icia

n’s id

entit

y, tr

aini

ng, a

nd e

xper

ienc

e w

ere

asso

ciat

ed w

ith re

ceip

t of

anal

gesic

s in

the

emer

genc

y de

part

men

t.

21. H

eins

JK

et a

l., 2

006

N5

868,

AA

(603

), W

hite

(249

), O

ther

Cha

rt re

view

of p

atie

nts w

ith

mus

culo

skel

etal

pai

n tr

eate

d in

the

emer

genc

y de

part

men

t dur

ing

an

eigh

t wee

k pe

riod

in 2

004.

Whi

te p

atie

nts w

ere

mor

e lik

ely

than

AA

pat

ient

s (O

R 1.

9,

95%

CI 1

.2–2

.8) t

o re

ceiv

e op

ioid

s whi

le in

the

emer

genc

y ro

om a

nd to

rece

ive

a pr

escr

iptio

n fo

r an

anal

gesic

(OR

1.8,

95

% C

I 1.3

–2.6

) and

for o

pioi

ds (O

R 2.

0, 9

5% C

I 1.3

–2.9

).

(Con

tinue

d on

p. 1

83)

22. T

amay

o-Sa

rver

et a

l.,

2003

N5

67 4

87 A

A

(21%

) Lat

ino,

9%

an

d N

HW

(68%

)

Cro

ss-s

ectio

nal s

urve

y of

AA

, La

tino,

and

Whi

te p

atie

nts i

n th

e 19

97–1

999

Nat

iona

l Hos

pita

l A

mbu

lato

ry M

edic

al C

are

Surv

eys

to c

ompa

re p

resc

riptio

n of

any

an

alge

sics a

nd o

pioi

d an

alge

sics

by ra

ce/e

thni

city

am

ong

patie

nts

trea

ted

in th

e em

erge

ncy

depa

rtm

ent.

AA

s (0.

72; 9

5% C

I 0.6

6–0.

79) a

nd w

ere

signi

fican

tly le

ss

likel

y th

an N

HW

s to

rece

ive

opio

ids f

or tr

eatm

ent o

f pai

n in

the

emer

genc

y ro

om o

vera

ll an

d fo

r mig

rain

e an

d ba

ck

pain

but

not

long

-bon

e fr

actu

re a

fter a

djus

tmen

t for

sex,

age

, an

d m

etho

d of

pay

men

t, pa

in se

verit

y, vi

sit c

hara

cter

istic

s, an

d ho

spita

l cha

ract

erist

ics i

n m

ultiv

aria

te m

odel

s Lat

inos

w

ere

also

sign

ifica

nt le

ss li

kely

than

NH

Ws t

o re

ceiv

e op

ioid

s ov

eral

l (0.

72; 9

5% C

I 0.6

4–0.

81) b

ut n

ot w

hen

exam

ined

by

type

of p

ain.

(Rac

e/et

hnic

ity w

as n

ot in

depe

nden

tly

asso

ciat

ed w

ith re

ceip

t of a

n an

alge

sic in

the

emer

genc

y de

part

men

t.)

23. T

odd

KH

et

al.,

200

0N

521

7, 1

27 A

A,

90 N

HW

Retr

ospe

ctiv

e re

view

of m

edic

al

reco

rds o

f AA

and

NH

W p

atie

nts

trea

ted

for i

sola

ted

long

-bon

e fr

actu

res i

n an

em

erge

ncy

depa

rtm

ent i

n At

lant

a, G

A o

ver

a 40

mon

th p

erio

d (S

epte

mbe

r 1,

1992

–Dec

embe

r 31,

199

5).

74%

of N

HW

s (74

%) c

ompa

red

with

57%

of A

As r

ecei

ved

anal

gesic

s in

the

emer

genc

y de

part

men

t for

isol

ated

long

-bo

ne fr

actu

res d

espi

te si

mila

r acc

ount

s of p

ain

com

plai

nts i

n th

e m

edic

al re

cord

. AA

s rem

aine

d sig

nific

antly

mor

e lik

ely

than

NH

Ws t

o no

t rec

eive

ana

lges

ics i

n th

e ED

(RR

1.66

, 95

% C

I 1.1

1–2.

50) a

fter a

djus

tmen

t for

pot

entia

l con

foun

ders

(i.

e. tim

e sin

ce in

jury

, tot

al ti

me

in E

D, t

ime

of p

rese

ntat

ion,

ne

ed fo

r fra

ctur

e re

duct

ion,

and

pay

er st

atus

) in

mul

tivar

iate

m

odel

s.

24. T

odd

KH

et

al.,

199

3N

513

9, 3

1 H

ispan

ics,

108

NH

Ws

Retr

ospe

ctiv

e co

hort

stud

y of

H

ispan

ic a

nd H

NW

pat

ient

s tr

eate

d fo

r iso

late

d lo

ng-b

one

frac

ture

s in

the

UC

LA E

mer

genc

y M

edic

al C

ente

r 199

0–19

91.

Hisp

anic

s wer

e sig

nific

antly

less

like

ly th

an N

HW

s to

rece

ive

pain

med

icat

ion

in th

e em

erge

ncy

depa

rtm

ent

in a

n un

adju

sted

ana

lysis

(RR

2.12

, 95%

CI 1

.35

to 3

.32;

p5

.003

) and

afte

r con

trol

for p

atie

nt, i

njur

y an

d ph

ysic

ian

char

acte

ristic

s (O

R 7.

46, 9

5% C

I 2.2

2 to

25.

04).

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

(Con

tinue

d on

p. 1

84)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

25. K

poso

wa

et a

l., 2

002

N5

5,01

3, A

A

(995

), A

sian

120,

H

ispan

ic 4

78,

NH

W 3

,720

Cro

ss-s

ectio

nal s

urve

y. N

atio

nal

Am

bula

tory

Med

ical

Car

e Su

rvey

19

95–1

998.

AA

s (O

R 0.

67, 9

5% C

I 0.5

5–0.

82) a

nd H

ispan

ics (

OR

0.70

, 95%

CI 0

.52–

0.93

) wer

e le

ss li

kely

that

Whi

tes t

o re

ceiv

e pr

escr

iptio

ns fo

r tre

atm

ent o

f bac

k pa

in. R

ates

wer

e pa

rtic

ular

ly lo

w fo

r AA

and

Hisp

anic

men

whe

n co

mpa

red

to

Whi

te m

en (O

R 0.

47, 9

5% C

I 0.3

5–0.

68) a

nd (O

R 0.

51, 9

5%

CI 0

.33–

0.79

), re

spec

tivel

y.

26. W

on A

et

al.,

199

949

,971

nur

sing

hom

e re

siden

tsC

ross

-sec

tiona

l ana

lysis

of d

ata

on a

nalg

esic

use

am

ong

49,9

71

patie

nts i

n nu

rsin

g ho

mes

from

the

Syst

emat

ic A

sses

smen

t of G

eria

tric

dr

ug u

se v

ia E

pide

mio

logy

(SA

GE)

da

taba

se in

four

stat

es fr

om

1992

–199

5.

AA

s (O

R 1.

69, 9

5% C

I 1.4

0–2.

05) a

nd H

ispan

ics (

OR

1.56

, 95

% C

I 0.7

0–1.

04) w

ere

signi

fican

tly m

ore

likel

y th

an N

HW

nu

rsin

g ho

me

patie

nts t

o no

t rec

eive

ana

lges

ics.

Patie

nts w

ho

wer

e m

ale,

851

or c

ogni

tivel

y im

paire

d w

ere

also

sign

ifica

ntly

m

ore

likel

y no

t to

rece

ive

anal

gesic

s.

27. L

ee e

t al.,

20

01N

546

6, 5

8 H

ispan

ic a

nd 4

08

NH

Ws

Con

veni

ence

sam

ple

of p

atie

nts i

n ho

spita

l em

erge

ncy

depa

rtm

ent.

9/1/

99–1

2/31

/99.

Hisp

anic

s and

NH

Ws d

id n

ot si

gnifi

cant

ly d

iffer

in te

rms o

f ch

ief c

ompl

aint

s and

leve

l of p

ain.

The

two

grou

ps a

lso d

id

not d

iffer

sign

ifica

ntly

in te

rms o

f the

ir m

ean

expe

ctat

ions

fo

r pai

n re

lief (

76m

m, 9

5% C

I 70–

82 a

nd 7

2mm

, 95%

CI

70–7

4) fo

r Hisp

anic

s and

NH

Ws,

resp

ectiv

ely.

Hisp

anic

s and

N

HW

s also

did

not

sign

ifica

ntly

diff

er in

term

s of t

heir

mea

n ex

pect

atio

ns o

f a re

ason

able

tim

e to

wai

t for

pai

n m

edic

atio

n (3

1 m

inut

es, 9

5% C

I 28–

33 a

nd 3

3 m

inut

es, 9

5% C

I 26–

48,

resp

ectiv

ely)

.

(Con

tinue

d on

p. 1

85)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

28. P

orte

noy

et a

l., 2

004

N5

1335

, AA

(4

47),

NH

W (4

54),

Hisp

anic

(434

)

Nat

iona

lly re

pres

enta

tive

cros

s-se

ctio

nal t

elep

hone

surv

ey o

f H

ispan

ics (

any

race

), A

fric

an

Am

eric

ans a

nd N

HW

s con

duct

ed

April

3, 2

002–

April

29,

200

2.de

signe

d to

exp

lore

the

rela

tions

hip

betw

een

race

/eth

nici

ty a

nd c

hron

ic

pain

.

On

a 0–

10 p

ain

seve

rity

scal

e, W

hite

par

ticip

ants

repo

rted

sig

nific

antly

low

er a

vera

ge p

ain

than

AA

s (5.

6 vs

. 6.1

, p,

.01)

and

Hisp

anic

s (5.

6 vs

. 6.4

, p,

.001

). A

As r

epor

ted

mor

e m

issed

hou

rs o

f wor

k be

caus

e of

pai

n. H

ispan

ics

mor

e fr

eque

ntly

repo

rted

inte

rfer

ence

with

dai

ly a

ctiv

ities

du

e to

pai

n (i.

e. di

stur

bed

sleep

, ina

bilit

y to

do

hous

ehol

d ch

ores

, ina

bilit

y to

wor

k an

d et

c). N

HW

s, ho

wev

er m

ore

freq

uent

ly re

port

ed ir

ritab

ility

and

the

inab

ility

to p

artic

ipat

e in

spor

ts. O

vera

ll, h

owev

er, t

here

wer

e fe

w d

iffer

ence

s in

over

all l

ife in

terf

eren

ce fr

om p

ain

by ra

ce/e

thni

city

. Onl

y 79

% o

f Hisp

anic

s had

visi

ted

a he

alth

car

e pr

ovid

er fo

r any

ty

pe o

f pai

n co

mpa

red

to 9

3% o

f NH

Ws a

nd 9

4% o

f AA

s. C

ompa

red

to N

HW

s Hisp

anic

s had

sign

ifica

ntly

mor

e fe

ar

abou

t com

bini

ng p

ain

relie

vers

and

oth

er m

edic

atio

ns (5

.3 v

s. 4.

7, p

,.0

5) a

nd si

gnifi

cant

ly m

ore

conc

ern

abou

t bec

omin

g ad

dict

ed to

pai

n re

lieve

rs (4

.1 v

s. 3.

4, p

,.0

1).

29. O

mar

a et

al.,

200

1N

521

9119

97 c

ase

stud

y de

signe

d to

ca

lcul

ate

the

prop

ortio

n of

adu

lt pa

tient

s who

die

d of

chr

onic

ill

ness

es a

nd re

ceiv

ed se

rvic

es fr

om

a ho

spic

e pr

ogra

m b

y ra

ce/e

thni

c gr

oup.

Hos

pice

serv

ices

wer

e re

ceiv

ed b

y 30

% o

f Cau

casia

n, 2

0%

of A

sian,

19%

of H

ispan

ic, a

nd 1

8% o

f Afr

ican

-Am

eric

an

dece

dent

s.

(Con

tinue

d on

p. 1

86)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

30. R

hode

s et

al.,

200

7N

598

,911

AA

(4

095)

NH

W

(948

16)

Surv

ey o

f fam

ilies

mem

ber a

bout

se

rvic

es re

ceiv

ed in

hos

pice

car

e.Pe

r fam

ily re

pond

ents

AA

pat

ient

s wer

e sig

nific

antly

mor

e lik

ely

than

NH

Ws n

ot to

hav

e th

eir p

ain

need

s mee

t (O

R 1.

5, 9

5% C

I 1.3

–1.7

). A

As w

ere

also

sign

ifica

ntly

mor

e lik

ely

than

NH

Ws t

o ha

ve th

eir n

eeds

for d

yspn

ea a

nd e

mot

iona

l su

ppor

t unm

et.

31. B

ijur e

t al.,

20

08N

544

9, H

ispan

ic

(235

), A

A (1

33),

NH

W (8

1)

Retr

ospe

ctiv

e ch

art r

evie

w o

f pa

tient

s tre

ated

for l

ong-

bone

fr

actu

res i

n 2

acad

emic

em

erge

ncy

depa

rtm

ents

1/2

000–

12/2

002.

Ther

e w

as n

o st

atist

ical

ly si

gnifi

cant

raci

al/e

thni

c di

ffere

nces

in

rece

ipt o

f ana

lges

ics f

or tr

eatm

ent o

f lon

g-bo

ne fr

actu

res.

32. Q

uazi

et

al.,

200

7A

ctua

l sam

ple

size

not p

rovi

ded

Wei

ghte

d sa

mpl

e 19

.7 m

illio

n

Ana

lysis

of H

ospi

tal A

mbu

lato

ry

Car

e Su

rvey

dat

a fo

r AA

, H

ispan

ics a

nd N

HW

trea

ted

in

the

emer

genc

y de

part

men

t for

he

adac

he a

nd lo

ng-b

one

frac

ture

19

95–1

999

com

pare

d to

200

0–20

03.

Onl

y H

ispan

ics e

xper

ienc

ed a

sign

ifica

nt im

prov

emen

t in

rece

ipt o

f an

anal

gesic

ove

r the

two

time

perio

ds (7

1.3%

–80

.8%

p5

.011

) whi

le o

nly

AA

s and

NH

W im

prov

ed in

the

rece

ipt o

f opi

ods a

mon

g pa

tient

s tre

ated

for h

eada

che.

Long

bo

ne fr

actu

re fo

r all

thre

e ra

ce/e

thni

c gr

oups

was

seen

for

Hisp

anic

s onl

y. Re

ceip

t of o

pioi

d an

alge

sics i

mpr

oved

for

AA

s for

hea

dach

e on

ly a

nd N

HW

s but

not

for H

ispan

ics

com

parin

g th

e tw

o tim

e pe

riods

.

33. T

amay

o-Sa

rver

et a

l.,

2003

(with

D

awso

n)

N5

2872

ph

ysic

ians

Stud

y of

Am

eric

an C

olle

ge o

f Em

erge

ncy

Phys

icia

ns m

embe

rshi

p on

9/2

0/20

01. C

linic

al v

igne

ttes

wer

e us

ed to

exa

min

e ph

ysic

ian

opio

id p

resc

ribin

g by

race

/eth

nici

ty

alon

e an

d w

hen

occu

patio

n, S

ES

and

rela

tions

hip

to p

rimar

y ca

re

prov

ider

wer

e kn

own.

Phys

icia

ns p

lans

for p

resc

riptio

n of

opi

oids

did

not

sig

nific

antly

var

y by

race

/eth

nici

ty a

mon

g hy

poth

etic

al

patie

nts i

n th

ree

clin

ical

vig

nette

s (m

igra

ine

head

ache

, bac

k pa

in a

nd a

nkle

frac

ture

). Pr

escr

iptio

n ra

tes i

ncre

ased

whe

n in

form

atio

n re

gard

ing

occu

patio

n, S

ES a

nd re

latio

nshi

p w

ith p

rimar

y ca

re p

rovi

der w

ere

prov

ided

for t

he d

iagn

oses

di

fficu

lt to

ver

ify c

linic

ally

such

as m

igra

ine

or b

ack

pain

but

fin

ding

s wer

e no

t con

sider

ed to

be

clin

ical

ly si

gnifi

cant

.

(Con

tinue

d on

p. 1

87)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

Pain

per

cept

ion

41. E

dwar

ds

RR e

t al.,

200

1N

533

7, 6

8 A

A,

269

NH

WFa

ctor

ana

lysis

of d

ata

from

ex

perim

enta

l stu

dy. S

tudy

dat

es n

ot

prov

ided

in a

rtic

le.

AA

s rep

orte

d hi

gher

pai

n se

nsiti

vity

(Mea

n 55

.7 v

s. 53

.4

NH

Ws,

p,.0

1), a

vera

ge ra

tings

of l

evel

s of c

linic

al p

ain

(Mea

n 6.

9 vs

. 6.5

, p,

.05)

. Ther

e w

as n

o sig

nific

ant r

acia

l/et

hnic

diff

eren

ce in

pai

n in

terf

eren

ce, o

r affe

ctiv

e di

stre

ss.

A c

orre

latio

nal a

naly

sis sh

owed

a sm

all i

nver

se a

ssoc

iatio

n be

twee

n pa

in to

lera

nce

and

repo

rted

seve

rity

of c

linic

al p

ain.

42. R

iley

JL

3rd

et a

l., 2

002

N5

1557

, 473

AA

, 10

84 N

HW

Cro

ss-s

ectio

nal s

urve

y of

pat

ient

s tr

eate

d fo

r chr

onic

pai

n at

pai

n m

anag

emen

t clin

ic o

f a u

nive

rsity

ho

spita

l. St

udy

date

s not

pro

vide

d in

art

icle

.

Afr

ican

Am

eric

an p

atie

nts r

epor

ted

signi

fican

tly h

ighe

r le

vels

of p

ain

unpl

easa

ntne

ss (5

.2),

emot

iona

l res

pons

e to

pa

in (1

9.6)

, and

pai

n be

havi

or (1

9.3)

, but

not

pai

n in

tens

ity

(5.6

) com

pare

d to

NH

W (5

.6, 4

.7, 1

7.3,

7.7

, res

pect

ivel

y). Th

e re

sults

indi

cate

diff

eren

ces i

n lin

ear a

ssoc

iatio

ns b

etw

een

pain

m

easu

res w

ith A

fric

an A

mer

ican

s sho

win

g a

stro

nger

link

be

twee

n em

otio

ns a

nd p

ain

beha

vior

than

Whi

tes.

43.

McC

rack

en

LM e

t al.,

20

01

N5

264,

57

AA

, 20

7 N

HW

Cro

ss-s

ectio

nal s

urve

y of

pat

ient

s se

ekin

g tr

eatm

ent f

or c

hron

ic p

ain

at a

uni

vers

ity p

ain

man

agem

ent

cent

er. S

tudy

dat

es n

ot p

rovi

ded

in

artic

le.

AA

s rep

orte

d sig

nific

antly

hig

her p

ain

seve

rity,

mor

e pa

in-

rela

ted

anxi

ety

(84.

3 vs

71.

5, p

,.0

5), m

ore

phys

ical

disa

bilit

y (M

ean

5 0

.20

vs 0

.14,

p,

.05)

, psy

chos

ocia

l disa

bilit

y (M

ean

0.22

vs 0

.16,

p,

.05)

com

pare

d to

NH

Ws,

resp

ectiv

ely.

(Con

tinue

d on

p. 1

88)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

44. C

aste

l et

al.,

200

8N

511

24,

Cau

casia

n (9

91),

Non

-Cau

casia

n (1

33)

Long

itudi

nal s

tudy

of c

ance

r pai

n ac

ross

the

dise

ase

traj

ecto

ry a

mon

g w

omen

with

a b

reas

t can

cer b

one

met

s 10/

1998

–1/2

001.

Incr

ease

d se

vere

pai

n ha

zard

s wer

e as

soci

ated

with

non

-C

auca

sian

race

(haz

ard

ratio

[HR]

5 2

.52;

95%

CI 1

.69–

3.76

), re

stric

ted

perf

orm

ance

stat

us (H

R51.

73, 9

5% C

I 1.1

3–2.

64),

and

radi

atio

n th

erap

y in

a p

revi

ous i

nter

val (

HR5

2.86

, 95%

C

I 1.6

1–5.

09).

Estim

ated

cum

ulat

ive

rate

s for

not

yet

reac

hing

a

BPI s

core

of 7

or a

bove

rang

ed fr

om 0

.79

(0.7

2–0.

85) i

n th

e fir

st in

terv

al to

0.6

4 (0

.55–

0.74

) in

the

last

inte

rval

for

non-

Cau

casia

n w

omen

, whe

reas

thes

e ra

tes r

ange

d fr

om 0

.91

(0.8

9–0.

93) t

o 0.

84 (0

.81–

0.87

) for

Cau

casia

n w

omen

.

45. C

ampb

ell

CM

et a

l.,

2008

N5

58, A

A (2

9),

NH

W (2

9)Ex

perim

enta

l stu

dy o

f noc

icep

tive

flexi

on re

flex.

Stu

dy d

ates

not

pr

ovid

ed in

art

icle

.

The

stud

y ev

alua

ted

resp

onse

s to

the

noci

cept

ive

flexi

on

refle

x (N

FR) i

nclu

ding

per

cept

ual r

espo

nses

(e.g

., pa

in

ratin

gs) a

nd p

hysio

logi

cal r

eflex

resp

onse

s (i.e

., bi

ceps

fem

oris

EMG

). Th

e tw

o ra

ce g

roup

s sig

nific

antly

diff

ered

in th

e N

FR

thre

shol

d (t

(51)

52.

23, p

5.0

30, C

ohen

’s d5

.61)

, with

Afr

ican

A

mer

ican

s (M

514

.99

mA

, SD

58.

98) d

emon

stra

ting

a re

flex

at a

low

er st

imul

us in

tens

ity re

lativ

e to

non

-Hisp

anic

Whi

tes

(M5

20.9

5 m

A, S

D5

10.4

5). P

ain

ratin

gs a

t NFR

thre

shol

d w

ere

not s

igni

fican

tly d

iffer

ent b

etw

een

the

grou

ps, s

ugge

stin

g th

at th

e lo

wer

stim

ulat

ion

inte

nsiti

es re

quire

d to

elic

it a

refle

x in

Afr

ican

-Am

eric

an v

ersu

s non

-Hisp

anic

Whi

te p

artic

ipan

ts

wer

e no

neth

eles

s per

ceiv

ed a

s sim

ilar.

(Con

tinue

d on

p. 1

89)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

46. G

rew

en

KM

et a

l.,

2008

N5

48, 2

5 A

A, 2

3 N

HW

Expe

rimen

tal s

tudy

of t

he

rela

tions

hip

betw

een

plas

ma

oxyt

ocin

(OT)

and

pai

n se

nsiti

vity

an

d th

e re

latio

n of

OT

to o

ther

fa

ctor

s kno

wn

to in

fluen

ce p

ain

perc

eptio

n am

ong

prem

enop

ausa

l w

omen

. Stu

dy d

ates

not

pro

vide

d in

art

icle

.

Afr

ican

Am

eric

an w

omen

dem

onst

rate

d sig

nific

antly

lo

wer

pai

n to

lera

nce

acro

ss ta

sks c

ompa

red

with

Whi

tes

(F(1

,46)

56.

31, p

5.0

156)

and

also

exh

ibite

d lo

wer

pla

sma

OT

leve

ls (A

A: 3

.90,

W: 7

.05

pg/m

L; p

5.0

014)

. Gre

ater

OT

leve

ls w

ere

corr

elat

ed w

ith g

reat

er to

lera

nce

to is

chem

ic p

ain

(r5

0.36

, p5

.013

) and

acc

ount

ed fo

r a m

argi

nally

sign

ifica

nt

port

ion

of th

e et

hnic

diff

eren

ce in

isch

emic

pai

n to

lera

nce

(B5

10.

29, p

50.

06).

Gre

ater

OT

was

also

cor

rela

ted

with

gr

eate

r tol

eran

ce o

f col

d pr

esso

r pai

n (r

50.

31, p

5.0

3);

how

ever

, thi

s ass

ocia

tion

was

no

long

er se

en a

fter t

he

varia

nce

due

to e

thni

city

was

acc

ount

ed fo

r.

47. M

echl

in

MB

et a

l.,

2005

N5

106,

51

AA

, 55

NH

W a

nd o

ther

R/

E gr

oups

Expe

rimen

tal s

tudy

of e

thni

c di

ffere

nces

in p

ain

sens

itivi

ty a

nd

the

rela

tions

hip

of p

ain

tole

ranc

e to

bl

ood

pres

sure

and

neu

roen

docr

ine

fact

ors.

Stud

y da

tes n

ot p

rovi

ded

in

artic

le.

Afr

ican

Am

eric

ans h

ad lo

wer

pai

n to

lera

nce

rela

tive

to

Cau

casia

n/O

ther

s afte

r bot

h re

st a

nd st

ress

. Onl

y th

e no

n-A

fric

an A

mer

ican

gro

up sh

owed

the

expe

cted

inve

rse

rela

tions

hip

betw

een

BP a

nd p

ain

sens

itivi

ty. A

fric

an

Am

eric

ans h

ad lo

wer

cor

tisol

con

cent

ratio

ns a

t res

t and

stre

ss

and

show

ed b

lunt

ed N

E an

d sy

stol

ic B

P re

spon

ses t

o st

ress

. O

nly

in C

auca

sians

/Oth

ers w

as th

e re

latio

nshi

p se

en b

etw

een

high

er st

ress

-indu

ced

BP, c

ortis

ol, a

nd N

E le

vels

and

grea

ter

pain

tole

ranc

e. Th

e re

sults

sugg

est t

hat t

here

are

alte

ratio

ns

in e

ndog

enou

s pai

n re

gula

tory

mec

hani

sms i

nvol

ving

BP,

co

rtiso

l, an

d N

E in

Afr

ican

Am

eric

ans.

It is

hypo

thes

ized

th

at g

reat

er c

hron

ic st

ress

in A

fric

an A

mer

ican

s may

be

a co

ntrib

utin

g fa

ctor

to th

e al

tera

tions

in p

ain

regu

latio

n.

(Con

tinue

d on

p. 1

90)

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

(Con

tinue

d on

p. 1

91)

48. E

dwar

ds,

et a

l., 1

999

N5

48, A

A (1

8)

NH

W (3

0) c

olle

ge

stud

ents

age

18–

47

Expe

rimen

tal s

tudy

of t

herm

al p

ain

resp

onse

. Stu

dy d

ates

not

pro

vide

d in

art

icle

.

Ther

e w

as n

o sig

nific

ant d

iffer

ence

bet

wee

n A

A a

nd N

HW

s in

war

mth

or t

herm

al p

ain

thre

shol

ds. A

As (

Mea

n 47

.1) h

ad

low

er th

erm

al p

ain

tole

ranc

e th

an N

HW

s (M

ean

49.6

) p,

.05.

49. R

ahim

-W

illia

ms F

B et

al.,

200

7

N5

226,

63

AA

, 61

Hisp

anic

and

82

NH

W

Expe

rimen

tal s

tudy

to e

xam

ine

ethn

ic v

aria

tion

in p

ain

sens

itivi

ty

amon

g A

A, H

ispan

ics a

nd N

HW

s. St

udy

date

s not

pro

vide

d in

art

icle

.

Ethn

ic id

entit

y w

as a

ssoc

iate

d w

ith p

ain

rang

e on

ly fo

r A

fric

an A

mer

ican

and

Hisp

anic

gro

ups.

Stat

istic

ally

co

ntro

lling

for e

thni

c id

entit

y re

nder

ed so

me

of th

e gr

oup

diffe

renc

es in

pai

n ra

nge

non-

signi

fican

t. Th

ese

findi

ngs

indi

cate

that

eth

nic

iden

tity

is as

soci

ated

with

pai

n se

nsiti

vity

in

eth

nic

min

ority

gro

ups,

and

may

par

tially

med

iate

gro

up

diffe

renc

es in

pai

n pe

rcep

tion.

50. C

ampb

ell

et. a

l, 20

05N

512

0, A

A (6

2),

NH

W (5

8)Ex

perim

enta

l stu

dy th

at e

xam

ined

et

hnic

diff

eren

ces i

n re

spon

ses t

o m

ultip

le e

xper

imen

tal p

ain

stim

uli,

incl

udin

g he

at p

ain,

col

d pr

esso

r pa

in, a

nd is

chem

ic p

ain.

Stu

dy

date

s not

pro

vide

d in

art

icle

.

Inte

nsity

and

unp

leas

antn

ess r

atin

gs fo

r sup

rath

resh

old

heat

stim

uli w

ere

signi

fican

tly h

ighe

r am

ong

AA

s. A

As

also

repo

rted

mor

e fr

eque

nt u

se o

f pas

sive

pain

cop

ing

stra

tegi

es (M

ean

3.86

, SD

1.9

4 fo

r AA

s and

mea

n 1.

99 S

D,

1.61

for N

HW

s. Fi

ndin

gs sh

ow d

iffer

ence

s in

labo

rato

ry p

ain

resp

onse

s bet

wee

n A

fric

an A

mer

ican

s and

Whi

tes a

cros

s m

ultip

le st

imul

us m

odal

ities

. No

risk

estim

ates

pro

vide

d.

51. W

eiss

e et

al.,

200

5N

534

3, A

A (9

7),

Hisp

anic

(36)

, AA

/PI

(12)

, AI (

1)O

ther

(4)

Expe

rimen

tal s

tudy

des

igne

d to

exa

min

e di

ffere

nces

in p

ain

repo

rtin

g be

havi

or w

hen

pain

is

repo

rted

to in

divi

dual

s of a

di

ffere

nt ra

ce o

r gen

der.

Stud

y da

tes n

ot p

rovi

ded

in a

rtic

le.

Raci

al a

nd g

ende

r con

cord

ance

wer

e no

t ass

ocia

ted

with

pa

in re

port

ing;

Pai

n re

port

ing

was

influ

ence

d by

inte

ract

ions

be

twee

n ge

nder

and

race

in th

e un

derg

radu

ate

stud

ent

subj

ect–

expe

rimen

ter d

yads

.

tabl

e 1.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

52. K

latz

kin

et a

l., 2

007

N5

55, A

A (3

2),

NH

W (2

3)Ex

perim

enta

l stu

dy d

esig

ned

to

exam

ine

the

asso

ciat

ion

of ra

ce

and

hist

ory

of m

ood

diso

rder

s w

ith e

xper

imen

tal p

ain

sens

itivi

ty

amon

g w

omen

. Stu

dy d

ates

not

pr

ovid

ed in

art

icle

.

AA

wom

en h

ad lo

wer

isch

emic

pai

n to

lera

nce

(p,

.001

) bu

t not

low

er p

ain

thre

shol

d th

an N

HW

wom

en. A

As a

lso

had

low

er c

old

pres

sor p

ain

tole

ranc

e an

d th

resh

old

amon

g w

omen

with

prio

r moo

d di

sord

ers o

nly.

ED 5

Em

erge

ncy

Dep

artm

ent

NH

W 5

Non

-Hisp

anic

Whi

teA

A 5

Afr

ican

Am

eric

anBP

5 b

lood

pre

ssur

eC

I 5 c

onfid

ence

inte

rval

OR

5 o

dds r

atio

UC

LA 5

Uni

vers

ity o

f Cal

iforn

ia L

os A

ngel

esSD

5 s

tand

ard

devi

atio

nSE

S 5

soci

oeco

nom

ic st

atus

RR 5

rela

tive

risk

BPI 5

Brie

f Pai

n In

vent

ory

EMG

5 e

lect

rom

yogr

aphy

NE

5 p

lasm

a no

repi

neph

rine

192 Race, ethnicity, and pain

U.S. adults has been fairly well documented, less is known about what makes racial/ethnic minority patients particularly prone to having their pain under-managed relative to similar White patients. Two basic models of pain dominate the current scientific literature. The first is the general biomedical model, which centers on the biological origin and physiological side of pain.11,34[p. 5] The second, the biopsychosocial model of pain, recognizes the interactive effects of the biological, psychological, and social dimensions of the pain experienced,35,36 which together define and shape behavioral and emotional pain responses. The biopsychosocial model seems to offer a more likely explanation for racial/ethnic variation in reported pain by viewing it as an experience constructed from a diverse set of influences.37,38

race/ethnicity, pain perception, and response. Understanding variations in how individuals perceive and respond to pain is essential to the provision of optimal pain management. The extent to which a noxious stimulus will be perceived as pain depends upon the context in which the pain occurs, characteristics of the pain itself (e.g., intensity, duration, location), past experiences with pain, anxiety about pain, pain expectations, and physical and mental co-morbidities.28,37,39

A fundamental question for experimental research studies that have focused on racial/ethnic variation in pain has been whether or not racial and ethnic groups differ substantively in the sensory or discriminatory perception of painful stimuli and (as a consequence) in the perception of pain relief. These studies have primarily focused on differences between African Americans and Whites on three dimensions of pain: threshold, tolerance, and intensity. The International Association for the Study of Pain40 defines a pain threshold as the least experience of pain that an individual can recognize and pain tolerance as the maximum amount of pain that an individual is prepared to tolerate. Pain intensity, often used to describe the level of pain that an individual is experiencing, is more accurately described in terms of the level of noxious stimulus that is applied in the experimental setting.40

It has been suggested that African Americans41–43 and other minority group members44 have higher levels of clinical pain and experience more pain from chronic conditions than Whites. Results from experimental studies that have focused on racial/ethnic variation in the sensory dimensions of pain have varied by the measure (threshold, tolerance, or intensity) and methods used to induce pain (such as electric stimuli,45 pres-sure, cold pressor and thermal41,42,45–51 pressure).The most consistent findings are lower thermal44–48 and ischemic pain tolerances41,47,50,52 observed among African Americans in comparison with non-Hispanic Whites (Table 1). In general, experimental studies show no racial/ethnic differences in pain thresholds among patients with otherwise similar characteristics.48,50 Few studies have examined other race/ethnic groups. In one study that examined pain sensitivity, Hispanics also had lower pain tolerances than Whites.49

A few hypotheses have been suggested to explain racial/ethnic variation in pain in the experimental setting, but most are largely speculative. Included are hypotheses regarding racial/ethnic differences in heat retention, endogenous opioid release, affective processing of painful stimuli42,48 and unmeasured psychological characteristics.53 Racial/ethnic similarity in reported pain intensity has been hypothesized to be a result of less psychosocial influence on this measure.42 There is also some empirical data that show

193Shavers, Bakos, and Sheppard

lower plasma levels of oxytocin (a nociceptive modulator that raises pain thresholds) among African American women compared with White women,46 which could explain racial differences in pain tolerance among women.

The main criticism of experimental studies has been their lack of generalizability54 and the failure of many studies to examine directly both the sensory and the affective dimensions of pain,48 the latter of which may offer a more reasonable explanation of racial/ethnic differences in pain perception than biology. The affective dimension of pain involves the feelings of unpleasantness that immediately follow exposure to painful stimuli as well as negative emotional responses to the pain.55 One study examining racial/ethnic variation in pain found a greater negative affective effect of clinically induced pain among African Americans than among Whites,48 which could contribute to racial/ethnic differences in pain perception and pain ratings. Results from these studies are consistent with studies of chronic pain sufferers showing that African Americans report higher levels of pain severity, depression, and disability than Whites and a stronger link between emotions and pain behaviors when compared to Whites.41,42,56,57

Culture, the pain experience, and methods of coping with pain. The pain response is not restricted to a physiological reaction to the exposure to noxious stimuli or tissue injury but encompasses emotional and behavioral responses as well. These responses have as their foundation variations in cultural perceptions, expectations, and past expe-riences which are known to differ among race/ethnic groups.58 Culture is defined as “the customary beliefs, social norms, and material traits of a racial, religious, or social group.”59 Culturally specific attitudes and beliefs about the origin, role, and meaning of pain not only influence the manner in which individuals view and respond to their own pain but can affect how they perceive and respond to the pain of others. There are several dimensions in which culture potentially influences the pain experience, includ-ing (1) individual pain-related behavior, sensations, emotions, and expectations; (2) interpersonal relationships and individual beliefs about pain and pain management (e.g., roles of family, health care professionals, support people); (3) inter-group relationships and the beliefs, expectations, and social meanings of pain of both the provider and the patient; (4) and the societal environment, which encompasses health culture, ideology, quality of life, and socioeconomics.

race/ethnicity, culture, and pain. Members of a racial/ethnic group to some extent share culturally specific expectations and norms. Differences between racial/ethnic groups in terms of their understanding, expectations, prior experiences,55 and culture can mediate individual responses to the same painful stimuli. As Lasch notes, “Cultural factors related to the pain experience include pain expression, pain language, lay remedies for pain, social roles, and expectations and perceptions of the medical care system.”60[p. 3] Strategies used by patients to cope with pain often depend on the individual’s view of the pain as a threat as well their perception of their ability to cope with the pain.61 Racial/ethnic variation in the perception, methods, and effectiveness of strategies for coping with chronic pain therefore may contribute to disparities in the pain experience.62

Locus of control and pain. Locus of control (LOC) refers to the individual’s percep-tion of the presence or absence of the ability to control specific events. In the context of chronic pain, painful events can be perceived as either a consequence of the individual’s

194 Race, ethnicity, and pain

behavior, which suggests that they can exert some control over the pain (internal con-trol), or as due to outside forces or chance, which implies lack of control over the pain (external control).63 Perceived lack of control over pain has been called one of the most distressing aspects of the chronic pain experience and has been found to be associated with greater levels of pain,64,65 depression, psychological distress, disability,65 and use of maladaptive coping strategies.63,66 Few studies have directly compared perception of locus of control and pain among racial/ethnic groups (see Table 2).63,67 In general, less frequent perceived internal control over pain63,67 and more frequent behaviors consistent with an external locus of control (e.g., praying and hoping, depression, anger, and fear) have been observed for African Americans than for non-Hispanic Whites,42,62,63,69–71 although not all studies have found this difference.72 Other research shows that Asian patients may frequently exhibit internal locus of control. In a recent study of mostly Chinese patients, a mind-over-body strategy was a frequently used for coping with cancer pain.73

Religion. Religion is hypothesized to affect health through faith or beliefs that encourage healthy behaviors and emotions, such as hope and forgiveness and their positive effects on physiologic processes.74,75 Individuals who participate in organized religion may also have more social support than others. Religion plays a central role in the lives of many racial/ethnic minority populations.76,77 For example, the view of pain taken by many Chinese has its basis in Eastern philosophies and religions includ-ing Taoism, Buddhism, and Confucianism.74 Pain may be perceived as an imbalance between Yin and Yang, Qi, or as an essential element of life.74 Protestant Christian churches have traditionally served as a source of social support, health information, and point of access for health care services in African American communities78[p. 6] and many Hispanics are Roman Catholics.79 Spirituality is an important cultural trait of many American Indian tribes and nations, for whom illness is often seen as a result of imbalances between the spiritual, mental, physical, and social interactions of the American Indian patient and his/her family.80 Healing, spiritual beliefs or power, and community are viewed as interconnected; thus, entire American Indian communities are often involved in healing ceremonies.80 Results of studies that have examined the impact of religion and spirituality on health outcomes vary widely, perhaps due in part to differences in how religion and spirituality are measured.81 This makes it difficult to disentangle the role of variation in methods of measuring religion and spirituality from actual differences in effect.

Many culturally specific beliefs about pain are rooted in religion and spirituality. In such a framework, pain may be viewed as a lesson from God, a reflection of God’s inability to intervene, a lack of God’s love, or a part of God’s plan;82 punishment for sin or misbehavior;81 as a test of faith, or as a means of achieving higher religious status.35,81,83 Religious beliefs regarding the origin and the purpose of pain may factor into a patient’s acknowledgment, acceptance, and response to pain and to the use of pain-relieving medications.84,85

Results from studies of the effect of religiosity and spirituality on pain experiences of racial/ethnic minority populations have shown both positive and negative effects. In general, both larger beneficial and negative effects of various aspects of religious and spiritual coping methods have been found for racial/ethnic minority patients com-

(Con

tinue

d on

p. 1

96)

tabl

e 2.

St

uD

ieS

eXa

MiN

iNG

ra

Cia

L/et

HN

iC v

ar

iati

ON

iN

Str

ateG

ieS

Or

Met

HO

DS

OF

CO

PiN

G w

itH

Pa

iN

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

Pain

cop

ing

56. N

dao-

Brum

blay

SK

et

al.,

200

5

N5

1192

, 108

8 N

HW

, 104

AA

w

omen

Retr

ospe

ctiv

e an

alys

is of

self-

repo

rted

dat

a fr

om a

pai

n as

sess

men

t que

stio

nnai

re

adm

inist

ered

at a

tert

iary

car

e pa

in

cent

er 1

993–

2000

.

AA

wom

en re

port

ed si

gnifi

cant

ly h

ighe

r pai

n se

verit

y sc

ores

(3

0.7

vs. 2

7.5,

p5

.008

), m

ore

psyc

holo

gica

l dist

ress

incl

udin

g de

pres

sion

(19.

4 vs

. 16.

9, p

5.0

30) a

ffect

ive

dist

ress

(3.5

vs.

3.1,

p5

.003

) pos

t-tr

aum

atic

stre

ss (1

2.9

vs. 8

.1, p

5.0

02)a

nd

disa

bilit

y (4

4.1

vs. 3

7.1,

p,

.005

) due

to p

ain,

hig

her s

core

s an

d gr

eate

r lev

els o

f int

erfe

renc

e w

ith re

crea

tiona

l (8.

1 vs

. 7.

1, p

,.0

05),

sexu

al (7

.4 v

s. 6.

1, p

,.0

05) a

nd so

cial

(7.0

vs

. 5.9

, p5

.001

) act

iviti

es, c

ompa

red

to N

HW

wom

en in

un

ivar

iate

ana

lyse

s. A

fter a

djus

tmen

t for

soci

odem

ogra

phic

, m

edic

al, p

sych

olog

ical

and

phy

sical

con

foun

ders

in h

iera

rcha

l lin

ear r

egre

ssio

n m

odel

s, th

ere

was

no

signi

fican

t ass

ocia

tion

betw

een

race

and

pai

n se

verit

y or

affe

ctiv

e di

stre

ss. H

owev

er,

Blac

k w

omen

with

chr

onic

pai

n ex

perie

nced

mor

e ph

ysic

al

impa

irmen

ts th

an W

hite

wom

en w

ith c

hron

ic p

ain

(bet

a 5

4.

622;

p,

.005

).

tabl

e 2.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

(Con

tinue

d on

p. 1

97)

57. T

an G

et

al.,

200

5N

548

2, 1

28 A

A,

354

NH

WFa

ctor

ana

lysis

of c

ross

-sec

tiona

l da

ta o

n pa

tient

s ref

erre

d to

an

inte

grat

ed p

ain

man

agem

ent

prog

ram

of a

VA

Med

ical

Cen

ter

1995

–199

8.

Com

pare

d to

NH

W s,

AA

s re

port

ed si

gnifi

cant

ly h

ighe

r m

ean

pain

seve

rity

(5.3

vs.

5.0,

p ,

.001

), de

pres

sion

(31.

6 vs

. 27.

1, p

,.0

01),

disa

bilit

y (1

7.9

vs 1

5.7,

p,

.001

) and

in

terf

eren

ce (5

.2 v

s. 5.

0, p

,.0

5). A

As w

ere

mor

e lik

ely

to

use

beha

vior

al c

opin

g st

rate

gies

, rep

orte

d lo

wer

leve

ls of

pe

rcei

ved

cont

rol o

ver p

ain,

mor

e di

sabi

lity

and

perc

eptio

n of

ha

rm a

nd m

ore

freq

uent

use

of e

xter

nal p

ain

copi

ng st

rate

gies

su

ch a

s pra

ying

/hop

ing.

Pai

n ap

prai

sal a

nd c

opin

g fa

ctor

s ex

plai

ned

18%

of t

he v

aria

nce

in p

ain

seve

rity,

39.3

% o

f the

va

rianc

e in

self-

repo

rted

dep

ress

ion,

22.

7% o

f the

var

ianc

e in

self-

repo

rted

disa

bilit

y an

d 18

.5%

of t

he se

lf re

port

ed p

ain

inte

rfer

ence

afte

r con

trol

ling

for d

emog

raph

ic v

aria

bles

for

the

stud

y sa

mpl

e as

a w

hole

. AA

s had

sign

ifica

ntly

hig

her

scor

es o

n th

e so

licitu

de a

nd p

rayi

ng/h

opin

g su

bsca

les.

Ethn

icity

was

not

sign

ifica

ntly

ass

ocia

ted

with

pai

n m

easu

res,

depr

essio

n an

d fu

nctio

ning

afte

r con

trol

ling

for o

ther

de

mog

raph

ic v

aria

bles

.

61. C

ano

A

et a

l., 2

006

N5

127,

58

AA

, 69

NH

WSu

rvey

of A

A a

nd N

HW

pat

ient

s re

crui

ted

for a

stud

y of

cou

ples

and

ch

roni

c pa

in.

AA

mor

e fr

eque

ntly

repo

rted

pra

yer a

nd h

opin

g (m

ean

14.7

2)

and

atte

ntio

n di

vers

ion

(mea

n 12

.28)

com

pare

d to

NH

W

(8.3

0 an

d 9.

76, r

espe

ctiv

ely)

(p,

.01

for p

raye

r and

hop

ing

and

p,.0

5 fo

r atte

ntio

n di

vers

ion)

.

tabl

e 2.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

(Con

tinue

d on

p. 1

98)

62. J

orda

n M

S et

al.,

199

8N

510

0, 4

8 A

A, 5

2 N

HW

Surv

ey o

f wom

en w

ith rh

eum

atoi

d ar

thrit

is re

crui

ted

from

a h

ospi

tal

outp

atie

nt rh

eum

atol

ogy

clin

ic

to e

xam

ine

raci

al d

iffer

ence

s in

stra

tegi

es fo

r cop

ing

with

pai

n.

Atte

ntio

n di

vers

ion

was

use

d by

16.

8% o

f AA

s com

pare

d to

13

.2%

of N

HW

s (p5

.013

) and

pra

ying

/hop

ing

was

use

d by

25

.8%

of A

As a

nd 1

8.8%

of N

HW

s (p5

.000

1) to

cop

e w

ith

pain

. AA

s (3.

1%) m

ore

freq

uent

ly re

port

ed in

activ

ity d

ue to

pa

in th

an d

id N

HW

s (2.

0%) p

5.0

001.

The

race

/eth

nic

grou

ps

did

not s

igni

fican

tly d

iffer

in te

rms o

f neg

ativ

e aff

ect o

f pai

n.

Igno

ring

pain

, cop

ing

stat

emen

ts a

nd st

rong

er c

ontr

ol b

elie

fs

wer

e as

soci

ated

with

bet

ter h

ealth

stat

us w

hile

atte

ntio

n di

vers

ion

pred

icte

d m

ore

pain

.

67. V

alle

rand

A

et a

l., 2

005

N5

281,

98

AA

, 18

3 N

HW

Cro

ss-s

ectio

nal s

urve

y of

pat

ient

s w

ith c

ance

r in

outp

atie

nt w

aitin

g ro

om o

f an

urba

n ca

ncer

cen

ter

who

repo

rted

pai

n in

the

past

m

onth

.

Ove

rall,

AA

s had

mor

e pa

in, h

ighe

r pai

n-re

late

d di

stre

ss,

and

low

er fu

nctio

nal s

tatu

s com

pare

d to

NH

W p

atie

nts.

Adj

ustm

ent f

or p

erce

ptio

n of

con

trol

ove

r pai

n re

duce

d ra

cial

/eth

nic

disp

ariti

es in

ove

rall

pain

by

42.6

%, w

orse

pai

n by

75.

9%, l

east

pai

n by

28.

1%, a

nd a

vera

ge p

ain

by 2

6.0%

.

68. J

ones

AC

et

al.,

200

8N

593

9, 4

59 A

A,

480

NH

WSu

rvey

of p

atie

nts f

orm

prim

ary

care

clin

ics i

n th

e VA

Hea

lthca

re

Syst

em a

ge 5

0–80

with

chr

onic

kn

ee o

r hip

pai

n.

AA

s w

ere

signi

fican

tly m

ore

likel

y to

repo

rt h

opin

g an

d pr

ayin

g as

a m

eans

of c

opin

g w

ith th

eir p

ain

than

wer

e N

HW

s (Ra

ce B

eta

coeffi

cien

t 0.7

4 (9

5% C

I 0.5

0–0.

99).

69. H

astie

et

al.,

200

5N

552

7, 1

85 A

A,

155

Hisp

anic

, 187

N

HW

Cro

ss-s

ectio

nal s

urve

y of

col

lege

st

uden

ts w

ho e

xper

ienc

ed p

ain

on

mor

e th

an o

ne o

ccas

ion

durin

g th

e pr

evio

us 6

mon

ths.

Pray

er/s

pirit

ual c

opin

g w

as m

ore

freq

uent

ly u

sed

by A

fric

an

Am

eric

ans (

61.1

%) a

nd H

ispan

ics (

49.7

%) t

han

NH

W (3

4.2%

) p,

.001

. NH

Ws (

80.7

%) a

nd H

ispan

ics (

75.5

%) r

epor

ted

self-

care

stra

tegi

es fo

r man

agin

g th

eir p

ain

than

did

AA

s (65

.5%

) p5

0.00

3. Th

e ra

ce/e

thni

c gr

oups

did

not

sign

ifica

ntly

diff

er in

te

rms o

f the

ove

rall

use

of p

assiv

e te

chni

ques

for c

opin

g w

ith

pain

or w

ith th

e us

e of

stan

dard

hea

lth c

are.

tabl

e 2.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

(Con

tinue

d on

p. 1

99)

70. E

dwar

ds

RR e

t al.,

200

5N

529

1, 9

7 A

A, 9

7 N

HW

, 97

Hisp

anic

Surv

ey o

f AA

, Hisp

anic

and

NH

W

patie

nts s

eeki

ng tr

eatm

ent f

or

chro

nic

pain

at a

uni

vers

ity p

ain

man

agem

ent c

ente

r with

pai

n of

3

mon

ths o

r mor

e du

ratio

n.

Ther

e w

ere

no ra

cial

/eth

nic

diffe

renc

es in

pai

n se

verit

y, se

nsor

y pa

in, a

ffect

ive

pain

, pai

n in

tens

ity, p

ain

inte

rfer

ence

or

gen

eral

act

ivity

. AA

(4.2

) and

Hisp

anic

s (3.

9) h

ad

signi

fican

tly h

ighe

r sco

res o

n th

e C

opin

g St

rate

gies

Sub

scal

e fo

r the

use

of p

rayi

ng a

nd h

opin

g st

rate

gies

for c

opin

g w

ith

pain

than

did

NH

Ws (

3.4)

(p,

.001

). C

atas

trop

hizi

ng w

as a

sig

nific

ant p

redi

ctor

of e

leva

ted

pain

dist

ress

and

a m

oder

ate

pred

icto

r of h

ighe

r effe

ctiv

e pa

in. C

atas

trop

hizi

ng w

as re

late

d to

gre

ater

pai

n se

verit

y am

ong

AA

and

NH

W p

atie

nts o

nly.

71. A

nder

son

KO e

t al.,

200

2N

531

, 14

AA

, 17

Hisp

anic

Stru

ctur

ed in

terv

iew

of A

A a

nd

Hisp

anic

pat

ient

s with

met

asta

tic

or re

curr

ent c

ance

r des

igne

d to

ex

plor

e ba

rrie

rs to

opt

imal

pai

n m

anag

emen

t.

Mor

e th

an o

ne-t

hird

of A

A a

nd H

ispan

ic p

atie

nts w

ho w

ere

pres

crib

ed a

nalg

esic

s wer

e pr

escr

ibed

dos

es th

at w

ere

not

deem

ed su

ffici

ent b

ased

on

thei

r sel

f-re

port

ed p

ain

inte

nsity

. A

A m

ore

freq

uent

ly th

an H

ispan

ics r

epor

ted

“a lo

t” o

f co

ncer

n re

gard

ing

pain

med

icat

ion

tole

ranc

e (4

3% v

s 29%

), w

orry

that

pai

n m

edic

atio

ns w

ill n

ot w

ork

(38%

vs 1

2%) ,

sid

e eff

ects

of a

nalg

esic

s (43

% v

s 12%

), th

at ta

king

stro

ng

anal

gesic

s mea

n de

ath

is ne

ar (4

3% v

s 18%

), an

d th

at p

ain

med

icin

es d

istra

ct p

rovi

der f

rom

trea

ting

the

dise

ase

(21%

vs

12%

). H

ispan

ic p

atie

nts m

ore

freq

uent

ly re

port

ed th

at th

ey

shou

ld b

e st

rong

and

not

lean

on

pain

med

icat

ions

(41%

vs

36%

), fa

mily

con

cern

s abo

ut p

ain

med

icat

ions

(41%

vs 2

9%)

and

wor

ry a

bout

add

ictio

n (5

3% v

s 36%

). Pr

ayer

as a

met

hod

of c

opin

g w

ith p

ain

was

repo

rted

by

83%

of A

A c

ompa

red

to

47%

of H

ispan

ics (

CI 1

0–63

).

72. B

ourjo

lly

JN e

t al.,

199

9N

510

2, 4

1 A

A, 6

1 N

HW

Ana

lysis

of d

ata

from

a

conv

enie

nce

sam

ple

of w

omen

.Bo

th A

A a

nd N

HW

wom

en e

xhib

ited

exte

rnal

locu

s of

cont

rol.

91. A

ng D

C

et a

l., 2

002

N5

596,

262

AA

, 33

4 N

HW

Surv

ey o

f pat

ient

s in

VA p

rimar

y ca

re c

linic

s 501

with

chr

onic

m

oder

ate-

seve

re p

ain

knee

and

/or

hip

pain

.

AA

pat

ient

s sco

red

high

er th

an W

hite

pat

ient

s on

the

relig

iosit

y sc

ale

(77

6 1

7 vs

. 70

6 2

1). I

n m

ultiv

aria

te

anal

ysis,

Bla

ck p

atie

nts w

ere

mor

e lik

ely

than

Whi

te p

atie

nts

to p

erce

ive

pray

er a

s hel

pful

in th

e m

anag

emen

t of t

heir

arth

ritis

(OR

2.1,

95%

CI 1

.19,

3.7

2). A

A p

atie

nts w

ere

also

le

ss li

kely

than

Whi

te p

atie

nts t

o in

dica

te th

at th

ey w

ould

co

nsid

er su

rger

y if

thei

r pai

n w

ere

to g

et se

vere

(OR

0.58

, 95

% C

I 0.3

4, 0

.99)

; thi

s rel

atio

nshi

p be

twee

n et

hnic

ity a

nd

cons

ider

atio

n of

surg

ery

is m

edia

ted

by p

erce

ptio

ns o

f “h

elpf

ulne

ss o

f pra

yer.”

NH

W 5

Non

-Hisp

anic

Whi

teA

A 5

Afr

ican

Am

eric

anC

I 5 c

onfid

ence

inte

rval

OR

5 o

dds r

atio

VA 5

Vet

eran

s Affa

irs

tabl

e 2.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

200 Race, ethnicity, and pain

pared with White patients (Table 2).62,70–71,86 For example, the religious participation of African Americans has been associated with improved health status,87 quality of life, and lower psychological distress,88 lower pain scores,89 less depression, more positive pain and symptom attitudes, higher formal social support, and a greater likelihood of taking pain medication compared with African American who did not participate in religious observances.89 Positive religious coping strategies have also been correlated with positive mental health status.90 Religious and spiritual beliefs can also negatively affect the pain experience through their influence on perceptions of the acceptability of health care interventions;90,91,92 the stigmatization of certain diseases/conditions that may reduce the likelihood of the patient seeking care;93 and through the belief that religious transgressions, lack of faith, or the individual’s behavior are perceived to warrant or to be responsible for the pain.94,95

Prayer is frequently reported as a method of coping with pain, particularly among African American and Hispanic patients68,–72,84,91,61 compared with non-Hispanic Whites (Table 2).72,61 High levels of pain, catastrophizing, and greater pain, distress, and dis-ability42,66 have also been found for African American patients.70 The use of prayer and hoping as a strategy for coping with pain was found to be associated with greater pain severity and higher ratings of affective pain and was a predictor of greater dis-ability among African American, Hispanic, and non-Hispanic White patients treated at a multidisciplinary pain management center. However, it is not clear whether this association was due to greater use of prayer among patients with more severe pain or vice versa. In a survey of veterans who suffered chronic pain from osteoarthritis of the knee or hip, the perception of prayer as helpful was significantly associated the lower likelihood of African American patients to consider knee or hip replacement compared with non-Hispanic White patients.91 In another study despite more frequent use of hoping and prayer, there was no association between higher pain and functional self-efficacy among African Americans compared with Whites.68

Pain assessment and communication. Pain is a subjective and multidimensional experience measured by the patient’s report of its presence, intensity, and duration. Guidelines from the American Pain Society list three major goals for pain assessment: (1) to characterize the patient’s pain status and related experience over time; (2) to provide a basis for treatment decisions; and (3) to document the effectiveness of pain management strategies.96 The reliance on patient self-reports highlights the importance of effective pain communication between patients and their providers. Inconsisten-cies often exist between patient-reported levels of pain and health care provider or caretaker assessment of pain levels,97 which may result in needless suffering.98 Patients also can contribute to inaccuracies in pain assessment by failing to report pain or underreporting/overreporting its intensity, duration, or importance and the impact it has on their quality of life or daily activities.

Pain expression. Public expressions of pain (verbal or non-verbal) may not always correlate with the actual presence or level of the pain experienced by minority patients,99–102 which can make it difficult for providers to assess accurately the patient’s pain. Patients from cultures with expressive styles of communication may more freely admit the presence of pain as well as their feelings regarding their pain and its impact on their life to others. In contrast, individuals from cultures that exhibit more stoic

201Shavers, Bakos, and Sheppard

behavior often see pain as something to be endured73 and may not freely admit having pain or may even deny it.

The extent to which individuals from different racial/ethnic groups exhibit these styles is often influenced by their specific cultural expectations and norms.100,103,104 For example, stoic pain behavior has been reported for Mexican Americans, American Indians,100 and Asians,84,102 and for men more often than women.103 In a study of cancer pain, Asians reported significantly lower pain scores than African Americans, non-Hispanic Whites, and Hispanics on four different pain scales, but no difference in symptoms.102 The social context in which the pain occurs is also important in determining appropriate responses. In a study that examined beliefs about appropriate pain behavior among Japanese and Euro-Americans, researchers found that overall Euro-Americans were more accepting of overt pain behavior than were Japanese participants. Overt pain behavior was also believed to be more acceptable for women than for men in both cultures.103

Providers who are not aware of or responsive to cultural variations in pain percep-tion, expression, expectations, and response are more likely to interpret patient needs and behavior in terms of their own culture,101,104 which may differ significantly from that of the patient and could adversely affect the patient’s pain management.105 For example, participants in a study of chronic joint pain from rheumatoid arthritis among urban-dwelling American Indians (mostly Choctaw, Navajo, and Sioux) cautioned that because American Indians do not like to talk about themselves, complain about pain, or ask for help, if and when a complaint about pain has been voiced to a physician that is not adequately addressed it will not be voiced again until the pain is severe.100 In a recent study of Asian Americans with cancer, participants indicated that pain should be handled bravely in order to set a good example for others.73 An unknowledgeable provider might incorrectly interpret such bravery as meaning that the patient is not experiencing pain.

The extent to which culture can influence pain perception and response depends in part on the degree to which the individuals identify with their ethnic or cultural group60 and to which they endorse their group’s cultural beliefs and behaviors. Potential mediators include age, gender, level of acculturation, socioeconomic status, and the degree of isolation from the ethnic or cultural group.

Pain measurement and assessment. A few studies have examined the appropriateness of existing scales for assessing pain among racial/ethnic minority populations.106–108 Results from these studies suggest that commonly used pain scales are appropriate for use in diverse population groups. Taylor et al.107 compared patient preference and the reliability and validity of the Faces Pain Scale (FPS),109 the Verbal Descriptor Scale,110 the Numeric Rating Scale,111 and the Iowa Pain Thermometer110 for measuring pain in cognitively intact and cognitively impaired older African Americans. Study results show that all participants were able to successfully use the four scales, although the reliability and validity of the scales was somewhat better among cognitively intact participants. Both cognitively intact and cognitively impaired patients expressed a preference for the Faces Pain Scale. In another study that examined the intercorrelation between the Visual Analogue Scale (VAS),112 Memorial Pain Assessment Card (MPS),113 and the Faces Pain Scale114 among African American, non-Hispanic White, Asian and Hispanic patients with cancer pain show a high correlation between the VAS, MPS, and FPS109

(Con

tinue

d on

p. 2

03)

tabl

e 3.

r

aC

iaL/

etH

NiC

va

ria

tiO

N i

N P

aiN

aSS

eSSM

eNt

aN

D C

OM

Mu

NiC

atiO

N

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

Pain

mea

sure

men

t and

ass

essm

ent

94. S

tato

n et

al.,

200

7N

545

5, A

A o

r A

fric

an A

mer

ican

(1

78),

Non

-H

ispan

ic W

hite

or

NH

W (2

19),

Hisp

anic

(35)

, ot

her (

21)

Cro

ss-s

ectio

nal s

urve

y to

exa

min

e co

ncor

danc

e be

twee

n ph

ysic

ian

and

patie

nt p

erce

ptio

ns o

f pat

ient

pa

in le

vel.

Phys

icia

ns w

ere

signi

fican

tly m

ore

likel

y to

und

eres

timat

e pa

in o

f AA

s (O

R51.

9, 9

5% C

I 1.3

–2.8

) in

a m

ultiv

aria

te

logi

stic

regr

essio

n m

odel

adj

uste

d fo

r age

, gen

der,

mar

ital

stat

us, e

duca

tion,

insu

ranc

e st

atus

, co-

mor

bidi

ty, d

epre

ssio

n,

pres

crip

tion

opio

id u

se a

nd b

odily

pai

n.

98. I

m E

et a

l.,

2007

N5

480,

109

AA

, 10

5 H

ispan

ics,

148

NH

W a

nd 1

18

Asia

ns

Cro

ss-s

ectio

nal c

ompa

rativ

e st

udy

of c

ance

r pat

ient

s rec

ruite

d th

roug

h th

e in

tern

et a

nd

com

mun

ity se

tting

s des

igne

d to

exa

min

e et

hnic

diff

eren

ces

in c

ance

r pai

n, sy

mpt

oms a

nd

func

tiona

l sta

tus.

Asia

ns re

port

ed th

e lo

wes

t can

cer p

ain

scor

es o

n al

l sca

les

and

Hisp

anic

s had

the

high

est p

ain

scor

es. Th

ere

wer

e no

ra

cial

/eth

nic

diffe

renc

es in

can

cer p

ain

sym

ptom

s.

99. H

obar

a M

, 20

05N

564

, Jap

anes

e (3

2), E

uro-

Am

eric

ans (

32)

Cro

ss-s

ectio

nal s

urve

y us

ing

the

Appr

opria

te P

ain

Beha

vior

Q

uest

ionn

aire

(APB

Q) w

as

empl

oyed

to e

xam

ine

the

effec

ts

of th

e pa

rtic

ipan

ts’ se

x an

d cu

lture

on

thei

r bel

iefs

rega

rdin

g ge

nder

-ap

prop

riate

pai

n be

havi

or. S

tudy

da

tes w

ere

not p

rovi

ded.

Euro

-Am

eric

an p

artic

ipan

ts ra

ted

pain

beh

avio

rs in

bot

h se

xes t

o be

mor

e ac

cept

able

. Mal

e an

d fe

mal

e pa

rtic

ipan

ts

of b

oth

cultu

res w

ere

equa

lly a

ccep

ting

of p

ain

beha

vior

s in

wom

en, b

ut m

ale

part

icip

ants

wer

e le

ss a

ccep

ting

of p

ain

beha

vior

s in

men

than

in w

omen

. Ther

e al

so w

as a

sign

ifica

nt

inte

ract

ion

betw

een

refe

rent

gen

der a

nd c

ultu

re o

f the

pa

rtic

ipan

t: Ja

pane

se p

artic

ipan

ts c

onsid

ered

pai

n be

havi

or in

bo

th g

ende

rs to

be

less

acc

epta

ble

than

did

Am

eric

ans.

tabl

e 3.

(con

tinue

d)

aut

hor

Sam

ple

Stud

y de

sign

Sum

mar

y of

find

ings

104.

Ram

er L

et

al.,

199

9N

551

, AA

(6),

NH

W (2

9),

Hisp

anic

(12)

, A

sian

(4)

Cro

ss-s

ectio

nal s

urve

y de

signe

d to

de

scrib

e th

e re

latio

nshi

p be

twee

n pa

in p

erce

ptio

n an

d et

hnic

iden

tity

and

soci

oeco

nom

ic st

atus

, to

eval

uate

the

inte

rcor

rela

tions

be

twee

n pa

in m

easu

res i

n di

ffere

nt e

thni

c gr

oups

, and

to

dete

rmin

e w

heth

er e

thni

city

or

soci

oeco

nom

ic st

atus

influ

ence

s pa

tient

’s pa

in c

ontr

ol b

elie

fs

and

satis

fact

ion

with

the

pain

m

anag

emen

t pro

vide

d.

In a

ll pa

in a

naly

ses,

Hisp

anic

s, A

fric

an A

mer

ican

s, an

d A

nglo

s did

not

diff

er si

gnifi

cant

ly. Th

e da

ta su

gges

t tha

t the

pa

in sc

ales

use

d in

this

stud

y ar

e ap

prop

riate

for u

se in

a

mul

ticul

tura

l pop

ulat

ion.

108.

Cav

illo

et a

l., 1

993

N5

60, M

exic

an

Am

eric

an (2

2),

NH

W (3

8)

Cro

ss-s

ectio

nal s

urve

y of

Mex

ican

A

mer

ican

and

Non

-Hisp

anic

W

hite

wom

en w

ho re

ceiv

ed a

n el

ectiv

e ch

olec

yste

ctom

y.

NH

W a

nd M

exic

an A

mer

ican

wom

en d

id n

ot si

gnifi

cant

ly

diffe

r in

term

s of r

espo

nse

to p

ain

from

cho

lecy

stec

tom

y. N

HW

wom

en w

ere

mor

e fr

eque

ntly

ass

esse

d hi

gher

pai

n sc

ores

by

nurs

es a

s com

pare

d to

Mex

ican

Am

eric

an w

omen

(F

54.

16, p

,.0

5).

112.

Ngu

yen

et a

l., 2

005

N5

1,50

5, A

A

(39%

), H

ispan

ic

(28%

), N

HW

35%

Cro

ss-s

ectio

nal s

urve

y of

chr

onic

pa

in su

ffere

rsA

A (1

5%),

Hisp

anic

s (13

%) w

ere

mor

e lik

ely

than

NH

W (9

%)

to re

port

that

the

felt

disc

rimin

ated

aga

inst

in th

eir a

bilit

y to

obt

ain

care

or t

reat

men

t for

thei

r pai

n be

caus

e of

thei

r ra

ce/e

thni

city

. A si

gnifi

cant

ly h

ighe

r per

cent

age

of H

ispan

ics

(3.9

%) t

o N

HW

s (2.

9%) a

gree

d th

at h

ealth

pro

fess

iona

ls do

no

t bel

ieve

them

whe

n th

ey sa

y th

ey a

re in

pai

n p,

.001

.

204 Race, ethnicity, and pain

scales irrespective of race/ethnicity.108 Im et al.,102 compared cancer pain scores among 480 non-Hispanic Whites, African Americans, Asians, and Hispanics using the VAS, FPS, McGill Pain Questionnaire [short form] (MPQ-SF)115 and the Brief Pain Inventory [short form] (BPI-SF)116 pain scales. Although each scale had high reliability across races/ethnic groups, the scales did not consistently identify the same group as having the highest cancer pain scores. Although Shin et al., found internal consistency for both the MPQ-SF and the BPI-SF among 119 Asian Americans, they found the BPI-SF to be more valid.106

Other studies have examined the relationship between the characteristics of the per-son to whom the pain is reported and pain ratings.117,118 In general, these studies have found that men report higher pain tolerances and lower pain intensities when the pain is reported to a female than when it is reported to a male. Few studies, however, have examined the role of race/ethnicity in such variability. A notable exception is Weisse et al., who found that race and gender concordance did not influence pain reporting among individuals exposed to pain in an experimental setting.119

Pain communication. Inadequate pain management can occur when health care providers inaccurately assess patient pain,19,60,97,98 ignore patient complaints about pain or have doubts about the credibility of reported pain,120 or have more concern regarding abuse of prescription medications and drug addiction by specific groups of patients.121–123 Provider assessment of patient pain is an important contributor to the under-treatment of pain in racial/ethnic minority patients.19,60,98,124 In a recent cross-sectional study of physician pain perception, African American patients were nearly two times more likely than patients from other racial/ethnic groups to have their pain underestimated (OR 1.9, 95% CI 1.3–2.8) by their physicians, despite the physicians’ access to self-reported pain ratings.98 In a study of chronic non-cancer pain, medical residents were found to underestimate patient pain more frequently than attending physicians, particularly for racial/ethnic minority patients. Physicians in general were more likely to overestimate pain in patients who were not African American, which suggests that race/ethnicity may play a role in pain assessment.97

Racial/ethnic minorities may have more difficulty than non-Hispanic Whites in effectively communicating their pain to their health care providers in ways that are clearly understood and believed.120–127 Language or other barriers may result in misin-terpretation of the patients’ pain. Environments (such as emergency rooms) where there is less likely to be an established relationship between the provider and patient may be particularly prone to problems with effective pain communication. Providers who do not know their patients may rely more heavily on stereotypes and personal beliefs and attitudes that do not accurately characterize the patient or their pain behavior and which may negatively impact their care. In a survey of physicians who treated patients in the emergency department, physicians were more likely to perceive Native American patients as exaggerating their pain compared with other racial/ethnic groups.120 Native Americans who were perceived by their physicians to be exaggerating their symptoms less frequently were able to achieve a 50% reduction in their pain.

Nguyen et al. found that Hispanics were significantly more likely than Whites to report that health care professionals did not believe they were in pain and to have

205Shavers, Bakos, and Sheppard

difficulty in obtaining treatment for pain because of language barriers.126 In a study of African American and Hispanic patients with cancer-related pain, 21% of African Americans reported difficulty talking about cancer pain.71 In the same study, 57% of African American and 38% of Hispanic patients indicated that their doctor or nurse did not ask them about pain prior to the patient initiating a discussion on pain.

Racial/ethnic minority patient requests for pain relief are perceived to be ‘drug seeking’ behavior more often than such requests from non-minorities.121–123 Many of the signs of drug-seeking behavior128 are subjective and can easily be applied to people suffering from severe or chronic pain which might make them more likely to be classified as drug-seeking. For example, African Americans are disproportionately represented among patients with sickle cell disease. The severity of the pain of sickle cell crises together with previous experience with and knowledge about the effectiveness of particular analgesics for treating their sickle cell crises may make patients more likely to be classified as drug-seeking. Emergency room staff, residents, and nurses in one survey perceived 7–9% of all patients and 13–17% of patients with sickle cell disease to be opioid-dependent.122 In another study, 22% of emergency department physicians and 9% of hematologists expressed the belief that more than 50% of sickle cell patients were addicted,123 a belief that is not supported by available scientific literature.129,130 Only 2–4% of patients with sickle cell disease in a recent survey met Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria for substance dependence.130

Provider-related barriers to effective pain management. Health care providers potentially contribute to racial/ethnic disparities in health through the influence of non-clinical characteristics, either actual or perceived, on provider perception of racial/ethnic minority patients and their health-related behavior. Physician recommendations and referrals have been noted to vary by race and ethnicity for a number of diseases and conditions.131–132

Prescribing patterns. Concerns about drug abuse and addiction were reported by primary care physicians to be among their major concerns about prescribing narcot-ics,133 particularly schedule II opioids for around-the-clock management of chronic non-cancer pain.134 The so-called war-on-drugs has increased fear among physicians of Drug Enforcement Administration (DEA) investigation and prosecution and con-tributed to the reluctance of providers to prescribe controlled substances for treatment of pain.135,136 A 2004 report in the Food and Drug Administration (FDA) Consumer Magazine indicated that investigations and prosecutions of pain specialists for drug trafficking have made providers leery of the DEA claim that they have nothing to fear as long as their prescribing patterns fit the norms.136 Forty-six percent of physicians responding to a survey on physicians’ perceived knowledge, goals, confidence, and satisfaction with pain management agreed that prescribing strong opioids would attract a medical review.137

Given the overall reluctance of providers to prescribe controlled substances, par-ticularly opioid analgesics,133,134,138,139 it is not surprising that the most consistently observed racial/ethnic disparity in pain management is in the prescription of opioid analgesics. Several studies show that physician prescribing patterns for controlled substances12,140–142 and patient use of controlled substances for pain control16 vary

206 Race, ethnicity, and pain

with patient race/ ethnicity, while a smaller number of studies have found no differ-ences.33,143 Research results suggest that racial/ethnic disparities in the receipt of opioid pain medication occur more frequently in the absence of objective clinical findings related to the presence, source, and intensity of the pain, which force the provider to rely more heavily on information provided by the patient. This view was shared by the authors of the Institute of Medicine report who state: “[G]iven the role of cultural and linguistic factors both patients’ perception of pain and in physicians’ ability to accu-rately assess patients’ pain . . . it is reasonable to suspect that health care disparities might be greater in pain treatment and other aspects of symptom management than in treatment of objectively verifiable disease.”1[p. 64] Lending further credibility to this hypothesis is the less frequent finding of racial/ethnic disparities in the prescription of pain medications for acute pain, the source of which can be clinically documented (e.g., x-ray for long-bone fractures).31,143,144 For example, an analysis of data from the 1997–1999 National Hospital Ambulatory Medical Care Survey examined racial/eth-nic variation in prescribing patterns for three conditions for which varying levels of objective clinical data were available (i.e., migraine headache, back pain and strain, and long-bone fracture). Although nearly equal proportions of Whites, African Americans and Latinos received any analgesic, racial/ethnic variation existed in the receipt of a prescription for an opioid analgesic and was widest for migraine (least objective) and narrowest for long-bone factures (most objective).22 Pletcher et al. found that although there were no statistical racial/ethnic differences in the receipt of an analgesic, African Americans were significantly less likely than all other racial/ethnic groups to receive a prescription of opioids in an examination of nearly 375,000 pain-related emergency department visits from 1993–2005.12 Fuentes et al. found no racial/ethnic disparity in the receipt of any analgesia or parenteral analgesia among patients treated for long-bone fractures in a Level 1 trauma center, but receipt of opioids was not examined.143 African Americans treated for long-bone fractures were 66% less likely to receive any analge-sic.23 Although there was a trend toward the lower receipt of narcotics among African Americans who received analgesics, this was not a statistically significant finding. In one study of patients treated in the emergency department, White patients were 86% more likely to receive opioids in the emergency room, 82% more likely to be discharged with a prescription for medicine for pain, and 98% more likely to receive a discharge prescription for opioids than African American patients.21 Data from a recent study suggested that racial disparities in the receipt of an analgesic for treatment of headache and long-bone fractures may be narrowing for African Americans, while no improve-ment was seen for Hispanics.33 Nonetheless, both groups continue to be significantly less likely than Whites to receive any analgesics or opioids for treatment of pain.

Discrimination. Personal bias against racial/ethnic minorities, uncertainty in their interactions with minority patients, beliefs or stereotypes regarding the health behavior of minority patients, and patient response to perceived provider mistreatment or other negative racial experiences all potentially contribute to racial/ethnic disparities in pain management. A number of studies that report racial/ethnic disparities in health care allude to the possible contribution of racial/ethnic discrimination.12,25 As Rust et al., state, overt discrimination is rare.145 Discrimination in the present day in the U.S. more frequently manifests itself covertly. In a recent review of the literature Burgess et al.

207Shavers, Bakos, and Sheppard

describe several ways in which psychological mechanisms result in the unintentional bias in treatment decisions that primarily operate through the use of stereotypes.146

Irrespective of whether or not discrimination is intentional, its impact is the same. According to the Commonwealth Fund’s 2001 Health Care Quality Survey, African Americans, Hispanics, and Asians responded more frequently than Whites that they would have received better care if they belonged to a different racial/ethnic group and that they were judged unfairly or treated with disrespect based on their race/ ethnicity or English-language ability.147 Other studies have produced similar results.148–150 In studies of chronic pain sufferers, Hispanics and African Americans more frequently than Whites reported fear of discrimination based on race/ethnicity when seeking relief for chronic pain123 and more frequently than Whites agreed that ethnicity and culture affected access to health care and pain management.147 There is ample evidence in the literature that racial/ethnic minorities are often less favorably viewed than Whites.151–154 The insidious nature of personal discrimination, however, makes it difficult to assess directly the role it plays in disparities in receipt of adequate pain management. It is worth mentioning that exposure to discrimination can also affect the experience of pain. Anger, helplessness, and depression are frequent consequences of experiences with racial/ethnic discrimination155,156 and have been noted to affect the experience of pain negatively; such reactions to racial/ethnic discrimination might also contribute to racial/ethnic disparities in pain. Other provider-related barriers to adequate pain control include insufficient knowledge about pain management, lack of formal training in pain management, poor skills in pain assessment, judgmental behavior, and lack of experience.98,106,137,157,158

Patient-related barriers to effective pain management. Patient attitudes, beliefs, and behaviors. Patient attitudes, beliefs, and behaviors, as well as access to care, may also contribute to racial/ethnic pain disparities. Racial/ethnic minority patients may more frequently have attitudes and beliefs that interfere with effective pain manage-ment.19,119,124,159 Fear of addiction or medication side effects have been found to be more prevalent among racial/ethnic minorities than Whites and may contribute to refusal or non-adherence with prescribed pain medications or treatment plans. In studies of chronic pain sufferers African American patients more frequently than Whites reported the belief that pain medication could not control,159 and Hispanics and African Americans more frequently than Whites reported fear of addiction to pain relievers.124 Among patients with advance or recurrent cancer 38% of Hispanic and 9% of African American expressed concerns about taking too many analgesics while 27% and 12%, respectively, expressed concerns about the side effects of medications19 or lost effectiveness of prescribed medications. In a survey of terminally ill patients with moderate-severe pain, racial/ethnic minorities more frequently than White patients refused additional pain therapy because of fear of addiction.119

Access to care. Differences in health insurance coverage can greatly influence access to timely and appropriate care.160 Thirty-four percent of Hispanic, 32% of American Indian/Alaska Native, 21% of African American, 19% of Asian/Pacific Islander, and 13% of non-Hispanic White non-elderly adults were estimated to be uninsured in 2005.161 In a recent national telephone survey of Americans who experience chronic pain, 47% of Hispanics, 34% of African Americans, and 32% of non-Hispanic Whites

208 Race, ethnicity, and pain

reported that financial concerns prevented treatment for their pain123 while African Americans more frequently than non-Hispanic Whites reported financial difficulty paying for end-of-life care.162

The health care system may also contribute to racial/ethnic disparities in receipt of effective pain management through barriers to access to appropriate types and doses of medications required for adequate pain control. These include the availability of medi-cines, insurance coverage of pain medications or treatments,163 and regulatory scrutiny of the dispensation of controlled substances. A National Medical Association-issued consensus report focused on the management of pain in underserved populations163 indicates that rising costs have resulted in increases in denials of payment for optimal pain treatment in state-financed Medicaid programs.

Availability of appropriate analgesics in neighborhood pharmacies. Pharmacies utilized by racial/ethnic minority patients may contribute to disparities in pain management due to the failure to stock specific or sufficient supplies of opioid analgesics. A survey of New York City pharmacies found disparities in the sufficiency of the supply of the opioid analgesics recommended as first-line medications for treatment of moderate to severe pain. Only 25% of surveyed pharmacies in neighborhoods in which Whites represented less than 40% of residents were determined to stock adequate supplies of opioids, compared with 72% of pharmacies in neighborhoods in which 80% or more of the residents were White.164 Sixty-six percent of the pharmacies that did not stock any opioids were located in predominantly non-White neighborhoods. In a similar survey of pharmacies in the State of Michigan, 86.9% of the pharmacies in neighbor-hoods where Whites represented 70% or more of the residents had adequate supplies of opioid analgesics compared with 54.2% of the pharmacies in neighborhoods where racial/ethnic minorities represented 70% or more of the residents.154 Several explanations have been provided for the insufficient supply of opioids noted among some community pharmacies. These include perception of a low demand for opioid analgesics, concerns about disposal, fear of robbery, insurance reimbursement-related issues, amount of paperwork involved with filling these prescriptions, and fear of fraud and illicit drug use,164,165 which could result in a DEA investigation.164

Discussion

Race and ethnicity continue to play important roles in the health of populations through association with social, political, and cultural determinants of opportunities, barriers, and exposures relevant to health.1,40 Several types of cancer,166,167 diabetes,168 sickle cell disease,169 HIV infection and AIDS,170 and autoimmune diseases (such as lupus), all of which can be sources of acute and chronic pain, discomfort, and disability168 are more prevalent among African Americans and other racial/ethnic minority populations than among non-Hispanic Whites.

Pain is poorly managed among American patients in general71 but as a number of the reviewed studies show12–33 this is especially true for racial/ethnic minority patients who may also be more susceptible to the physical and psychological disability that is a frequent consequence of poorly controlled and persistent pain. The available litera-ture suggests that these racial/ethnic disparities in pain management operate through

209Shavers, Bakos, and Sheppard

miscommunication and misperceptions about the presence and/or severity of pain. Overall access to health care, access to or utilization of pain specialists, appropriate pain medications and provider assumptions, and judgmental attitudes or beliefs about patient preferences regarding pain treatment or pain tolerances also contribute to disparities in pain management.145

It was not clear from the reviewed literature, however, the exact degree to which under treatment of the pain of racial/ethnic minority patients is a direct result of dis-crimination, stereotyping, lack of empathy, or misperception regarding the presence of pain or pain intensity. The extent to which these factors affect pain management among minority patients is likely exacerbated by the low number of underrepresented racial/ethnic minorities among practicing health care providers.101–106

In general, racial/ethnic concordance has been shown to be positively correlated with patient satisfaction and better health care process outcomes,171 receipt of needed medical care,172 feeling of provider empathy,173 and reduced stress.174 African Americans, Hispanics, and American Indians constitute about 25% of the U.S. population but only 6% of physicians and 9% of nurses.171 Data from the American Community Survey indicate that about 15% of all health care workers and 25% of all physicians and surgeons in the U.S. in 2005 were foreign-born.175 As the U.S. continues to look to foreign-born and foreign-educated workers to fill shortages in the health care workforce, the number of non-concordant cultural interactions in the health care setting is likely to increase, a circumstance that reinforces the importance of incorporating cultural competency training in health care facilities and medical school programs. The increased cultural competency and proficiency of the health care workforce will facilitate the provision of care that is more consistent with patient needs and cultural expectations.60 Weissman et al.58 define a culturally competent individual as one who is aware of “(1) their own cultural and family values; (2) their personal biases and assumptions about individuals with values that differ from theirs; (3) accepts cultural differences between themselves and individual patients; (4) is capable of understanding the dynamics of the differences; (5) and is able to adapt to diversity.”58[p. 715]

Access to care and its relationship to disparities are most frequently discussed in terms of health insurance coverage. The reviewed literature was fairly consistent in the finding of racial/ethnic disparities in physician prescribing patterns, particularly in hospital emergency departments where physicians are required to treat all patients irrespective of insurance status. Approximately 42% of all emergency room visits are pain-related12 and racial/ethnic minorities disproportionately use the emergency depart-ment for primary care176 and for pain treatment.177 Access to appropriate analgesics must be addressed not only in terms of physician prescribing patterns but patient access to specialized pain management services and availability of appropriate analgesics in neighborhood pharmacies. Although practice guidelines exist to assist providers in the management and selection of appropriate analgesics for several chronic diseases and conditions, physician adherence to established guidelines appears to be low.178

Racial/ethnic variation in pain perception and tolerance have been documented in the clinical setting and in anthropological and experimental studies179 but the exact role, if any, these variations play in racial/ethnic disparities in pain management is not clear. Variation in reported pain may be the result of several other factors including

210 Race, ethnicity, and pain

measurement error,36 the manner in which or whether pain is expressed,100 and demo-graphic factors such as age.180

Chronic and unrelieved pain can have an adverse physical and psychological effect on the quality of life of pain sufferers. The consequence of chronic and unrelieved pain include greater disability,28,56,57,180,181 greater interference with performing activities of daily living182 including difficulty in doing normal work,100 and a higher prevalence of depressive symptoms.42,56,57,181 Compared with non-Hispanic Whites, minorities experi-ence more physical impairments56 and have more difficulty performing normal work because of pain.101

The Joint Committee on Accreditation of Healthcare Organizations (JCAHO) pain management guidelines recognize appropriate assessment and management of pain as a patient right,183 as do the American Academy of Pain Medicine (AAPM) and the World Health Organization.184 The JCAHO also requires that health care facilities identify pain in their initial assessment of the patient, document the efficacy of the pain management treatment plan, and educate patients and their families about pain management. Inter-estingly, in a 1998 survey of members of the American Pain Society and the American Academy of Pain, racial/ethnic disparities in pain management were not identified as a major ethical dilemma.185 Thus, there appears to be a need to make health care providers aware of the unnecessary and disproportionate amount of suffering caused by under-treatment of pain among racial/ethnic minority patients and to recognize inadequate treatment for pain as an ethical issue. Incorporating courses in ethics and pain management into medical school and other health professional academic programs could increase knowledge and concern about appropriate methods for managing pain among providers for diverse patient populations. Patient and provider interventions are also needed to ensure that all patients are made aware of and have access to effective and appropriate pain medications and other pain management strategies.186

Notes 1. Smedley BD, Sith AY, Nelson AR, eds. Institute of Medicine, Committee on Under-

standing and Elimination Racial and Ethnic Disparities in Health Care. Unequal treatment: confronting racial and ethnic disparities in health care. Washington, DC: National Academies Press, 2003.

2. Agency for Healthcare Research and Quality. National healthcare disparities report, 2005. Rockville, MD: U.S. Department of Health and Human Services, December 2005. Available at: http://www.ahrq.gov/qual/nhdr05/nhdr05.htm.

3. Ward E, Jemal A, Cokkinides V, et al. Cancer disparities by race/ethnicity and socio-economic status. CA Cancer J Clin. 2004 Mar–Apr;54(2):78–93. Review.

4. Shavers VL, Brown ML. Racial and ethnic disparities in the receipt of cancer treat-ment. J Natl Cancer Inst. 2002 Mar 6;94(5):334–57. Review.

5. Shavers VL, Harlan LC, Winn D, et al. Racial/ethnic patterns of care for cancers of the oral cavity, pharynx, larynx, sinuses, and salivary glands. Cancer Metastasis Rev. 2003 Mar;22(1):25–38.

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