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Rumus CE

Rate = jumlah kasus pada waktu tertentu

-------------------------------------------

jumlah populasi pada waktu tertentu

Incidence = jumlah kasus baru pada waktu tertentu

----------------------------------------------------- x 100.000 org

jumlah orang yang beresiko pada waktu tertentu

prevalence:

1. point prevalence = jmlh penderita lama + baru suatu pnykit pd suatu saat

jmlh pnduduk saat itu

rumus ini digunakan untuk mengetahui jumlah pelayanan kesehatan yang

diselenggarakan

2. period prevalence = jmlh penderita lama = baru saat itu

jmlh pnduduk pertengahan

untuk penyakit yang sulit diketahui saat munculnya, spt kanker dan kelainan

jiwa

kedua rumus di atas dikali dengan konstanta

standardized mortality ratios (SMRs) = observed death

----------------------

expected death

case fatality rate = jmlh kematian karena pnykit tertentu

----------------------------------------------------- x 1000

jmlh kasus pnykit yg sama pada periode yg sama

The total number of deaths during the year

CDR = ------------------------------------------------------ x 1000

Midyear population

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The total number of live births

CLBR = --------------------------------------- x 1000

Midyear populations

Rumus midyear population :

1.When obtained the total population on January 1 (P1) and December 31 (P2) in

the same year, the total population at mid-year =

(P1 + P2) P1 + (P2-P1)

--------- or -----------

2 2

2. When obtained the total population of March 1 (P1) and December 31 (P2) in

the same year, the total population at mid-year (P):

3

P = P1 + ------ x P2

12

3. When mid-year population desired is located between two census then

calculated using the formula:

P1 + n

P = -----------------------

N (P2 - P1)

P = Mid-year population desired

P1 = The population at the first census

P2 = The population on which the second census

n = Number of months between the first and mid-year census desired

N = Number of months between 2 census

1.Natural Increase:

The rate of natural increase(RNI) is the crude birth rate minus the crude

death rate of a population (excluding migration)

Natural Increase rate = CLBR CDR

2. Relative Increase in Population Size(RI):

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Addition of the population is calculated based on a percentage of the population

now compared to the population of the past.

Pt - Po

RI = --------------- x 100% Pt = The population now

Po Po = Number of past population

3. Absolute Increase in Population Size (b) :

Addition of the population is calculated based on population now reduced the

number of people past, divided by the length of running time

Pt - Po

b = ------------

t

Pt = The population now;

Po = Number of past population;

t = time (year)

Total population of men

Sex Ratio = ------------------------------ x 100

Total population of women

number of non-prod age pop

Dependency Ratio = --------------------------------------- x 100

number of productive age pop