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Methodology for Compiling Crime Statistics in the
South African Police Service
Briefing to the Portfolio Committee on Police
6 March 2018
TABLE OF CONTENTS
1. Introduction.
2. Methodology:
Data Collection;
Data Registration;
Crime Classification : Broad Categories;
Periodic Crime Statistics; and
Crime Statistics : Computation.
3. Crime Statistics : Data Sources.
4. Quality Improvement Initiatives.
5. Crime Statistics Management and Policy Enhancement.
6. Issues raised in the previous meeting
2
INTRODUCTION: MANDATE
3
Section 218(f) of the Interim Constitution of the Republic of South Africa,
1993 (Act No. 200 of 1993) provides that โsubject to the directions of the
Minister of Safety and Security, the National Commissioner will be responsible
for the keeping and provision of crime intelligence data, criminal records and
statisticsโ.
The above-mentioned section is retained in terms of item 24 of schedule 6 of
the Constitution of the Republic of South Africa, 1996 (Act No 108 of 1996).
National Instruction 3/2011:
- Provides the crime definitions to be utilised by police officials for purposes of the
opening of case dockets and the registration thereof on the Crime Administration
System (CAS)/Investigation Case Docket Management System (ICDMS).
INTRODUCTION: SCOPE
4
Reported crime that was perpetrated within the borders of South Africa.
All crimes reported at the 1 144 police stations, including satellites and
ports of entry.
All crimes reported by:
- The victim;
- The witness;
- Third parties; and
- Detected by the South African Police Service (SAPS) during any policing
activity.
METHODOLOGY: DATA COLLECTION (1)
Administrative data collection process:
- The process starts with recording criminal incidents;
- The source document used for this purpose is a case docket;
- The first information of crime is obtained from the complainant/victim;
- The Community Service Centre (CSC) Commander, peruses the case docket for
correctness and completeness, before it is registered on the CAS/ICDMS;
General elements of crime:
- The process starts with recording criminal incidents;
- The first statement of crime must contain four elements of crime, namely:
Principle of legality - it must defined explicitly in law as a crime;
Conduct โ voluntary human behavior falling within the bounds of an offense recognised in law i,.e.
actual physical act (stabbing a person or stealing a motor vehicle);
Unlawfulness, the conduct contravenes a statutory requirement or a common law rule; and
Culpability โ blameworthy state of mind, i.e. intention (to commit the crime) or negligence.
- For the reported crime and incident to be accepted, it must satisfy all four elements of
crime.
5
METHODOLOGY: DATA COLLECTION (2)
- Questions asked to obtain all relevant information on the
reported incident, include:
Who was involved (the victim and/or perpetrator);
When and Where the offence was committed;
How did it happen; and
Why was the person reporting the crime there.
6
METHODOLOGY: DATA COLLECTION (3)
All crimes reported are recorded:
- Irrespective of when the crimes were committed.
- The elements of crime are assessed to ensure that the correct
classification or โchargeโ is allocated to the incident.
- The number of counts associated with the identified offence are
then determined.
- Preliminary investigations and inspections on the incident are
conducted to ensure that the information reported is accurate and
complete.
7
METHODOLOGY: DATA REGISTRATION
Registration on CAS/ICDMS:
- The information captured in the docket is registered on CAS/ICDMS;
- A case number is automatically generated by CAS/ICDMS; and
- The CSC Commander again checks the correctness and completeness of crime data
on CAS/ICDMS, against the information in the case docket.
Crime Codes and Daily Summary of Serious Crime (DSSC) Codes:
- Charge(s) is/are allocated crime code(s) on CAS/ICDMS;
- Crime codes are aggregated into DSSC Codes; and
- DSSC codes are used for reporting on crime statistics.
Crime Counting Rules:
- The counting unit is a charge: a case docket may contain one or more charges; and
- The released crime statistics represent the number of charges and not the number of
case dockets.
8
METHODOLOGY: CRIME CLASSIFICATION - BROAD
CATEGORIES OF CRIME (1)
Purpose:
- Crime is categorised to group crimes with similar characteristics together;
- Clarify the nature of crime and facilitate the understanding of the various crime
categories; and
- To develop policing strategies, specifically focusing on problematic categories, e.g.
TRIO crimes.
Five Broad Crime Categories (The analysis of crime statistics is enabled
by grouping serious crimes into):
- Contact crimes (crimes against the person);
- Contact related crimes;
- Property related crimes;
- Other serious crimes, and
- Crimes dependent on police action for detection.
17 Community-reported
serious crimes
9
METHODOLOGY: CRIME CLASSIFICATION - BROAD
CATEGORIES OF CRIME (2)
17 Community-Reported Serious Crimes
Contact Crimes
Murder
Sexual offences
Attempted murder
Assault GBH
Common assault
Common robbery
Robbery aggravated
including the following
TRIO Crimes: - Carjacking
- Robbery โ residential
- Robbery โ non-residential
Contact-related
Crimes
Arson
Malicious
damage to
property
Property-related
Crimes
Burglary at
residential
premises
Burglary at non-
residential
premises
Theft of motor
vehicle and motor
cycle
Theft out of or
from motor
vehicle
Stock theft
Other Serious
Crimes
Other theft
Commercial
crime
Shoplifting
10
METHODOLOGY: CRIME CLASSIFICATION - BROAD
CATEGORIES OF CRIME (3) 11
Four Crimes detected as result of police action
Illegal Possession of firearm and ammunition.
Drug-related Crimes.
Driving under the influence of alcohol and drugs.
Sexual offences detected as a result of police action.
METHODOLOGY: PERIODIC CRIME STATISTICS (1)
All crimes recorded at the stations within a particular cluster,
should collectively add up to the total of the crimes recorded
in that cluster.
The crimes recorded in the clusters within a province, should
collectively add up to the total crimes in that province.
The crime recorded in the nine provinces should collectively
add up to the national total.
12
Daily crime statistics:
- Reported crime is discussed at the Station Crime Combating Forum (SCCF) on
a daily basis and weekly at the Cluster Crime Combating Forum (CCCF).
- The Crime Information Management Analysis Centre (CIMAC) at the station,
advises station management on crimes incorrectly registered, incorrectly
mapped, incorrect crime counts and the daily crime pattern analysis.
- The daily statistics are used for operational planning and to direct the
deployment of resources.
- The statistics are distributed to internal stakeholders only.
13
METHODOLOGY: PERIODIC CRIME STATISTICS (2)
Monthly crime statistics:
- Reported crime is discussed at the Provincial Crime Combating Form (PCCF) on a
monthly basis.
- The Provincial Head: Crime Registrar advises provincial management on crime
incorrectly registered, incorrect crime counts and the monthly crime pattern analysis.
- The National Crime Registrar will then draw a โsnap-shotโ of all crimes registered
in all provinces to brief the National Crime Combating Forum (NCCF) on the crime
situation.
- The snap-shot is drawn once all the station crime information has synchronised on
the Crime Management Information System (CMIS).
- The statistics are also distributed to internal stakeholders only.
14
METHODOLOGY: PERIODIC CRIME STATISTICS (3)
Quarterly crime statistics:
- Reported crime is discussed at the NCCF and National
Management Form (NMF) on a quarterly basis.
- The snap-shot is drawn once all the station crime information has
synchronised.
- This snap shot will be frozen for the quarter and be used to
produce the preliminary quarterly crime reports.
- The quarterly statistics are compared to the same period in the
previous financial year.
- These quarterly crime reports are disseminated to the public,
subsequent to the submission of the statistics to Cabinet.
15
METHODOLOGY: PERIODIC CRIME STATISTICS (4)
Annual crime statistics:
- At end of each financial year, a re-draw of the crime statistics is
performed, allowing all amendments to reflect in the annual crime
statistics.
The quarterly crime statistics from the redrawn statistics might differ
slightly from the frozen quarterly crime statistics.
- Cases closed off as unfounded are subtracted from the redrawn
annual crime statistics.
- The statistics are then used in the compilation of the annual Crime
Statistics Report.
- The annual Crime Statistics Report is disseminated to the public.
16
METHODOLOGY: PERIODIC CRIME STATISTICS (5)
Crime ratios will be used to compute crime rates only for crimes
against a person.
The crime ratios are used to compare crime rates for equal portions of
the population. (e.g. per 100 000 population).
This enables the comparison of crime rate to population increase per
province.
The crime ratios are computed at national and provincial levels due
to misalignment of station boundaries with those of the enumeration
area.
17
METHODOLOGY: CRIME RATIOS
Crime ratio:
- Computed as follows:
Crime ratio =๐๐ซ๐ข๐ฆ๐ ๐๐ข๐ ๐ฎ๐ซ๐
๐๐จ๐ฉ๐ฎ๐ฅ๐๐ญ๐ข๐จ๐ง ๐ฌ๐ข๐ณ๐ ๐ฑ ๐๐๐ ๐๐๐.
Percentage change:
- Percentage change involves determining if a crime has increased or
decreased, compared to the corresponding period.
Percentage Change =Past figureโCurrent figure
Past Figure ๐ฅ 100.
18
METHODOLOGY: CRIME RATIOS/PERCENTAGE CHANGE
CRIME STATISTICS : DATA SOURCES
CAS/ICDMS:
- CAS/ICDMS is the main source of data, a live system, therefore information is
updated frequently.
- Other sub-systems extract information from CAS/ICDMS.
The extracted information is restructured into a more presentable and user-friendly
format, for example using the Geographical Information System (GIS), Management
Information System, etc.
Crime Information Management System (CIMS) or SAPS 6:
- Used to archive synchronised reported crime data and data regarding case
progress on a monthly basis.
- Division: Technology Management Services (TMS) provides this information to
Crime Registrar on monthly basis.
Statistics South Africa:
- Provides quarterly and annual population estimates.
19
QUALITY IMPROVEMENT INITIATIVES
20
Crime Data Quality Management:
- To enhance the crime statistics quality at station level, the CIMAC conducts daily
quality checks. Any discrepancies are discussed and rectified at the SCCF.
- The Provincial Crime Registrar oversees the process and conducts quality assurance
checks at sampled stations.
- The National Crime Registrar : Quality Assurance Sub-section, performs the same
function.
- A Technical Working Team (TWT) was established based on Memorandum of
Agreement (MoU) between Statistics SA and the SAPS.
- The TWT is responsible for :
Quality assessments of the annual crime statistics prior to release.
Implementation of actions to address quality concerns and recommendations.
The previous two annual Crime Statistics Reports were quality assessed and the
process endorsed, by the Statistician General.
The Crime Registrar is developing policies and standards covering the
whole statistical value chain of crime statistics production.
Approved policies include:
- Policy on Crime Statistics; and
- Fundamentals of Crime Statistics Analysis.
Draft annexures to the policies include:
- Classification of Crime for Statistical Purposes;
- Crime Counting Rules;
- Standard Guidelines on Crime Registrar Station Products;
- Standard Operating Procedure on Crime Registrar Station Products;
- Dissemination and Revision Polices;
- Crime statistics User Guide; and
- Quality Assurance Framework.
CRIME STATISTICS MANAGEMENT AND POLICY
ENHANCEMENT 21
The role of the Station Commander in the Crime Recording Process, in line
with National Instruction 3 of 2011
The CSC Commander must ensure that -
(a) the information relating to the case has been correctly captured on CAS.
(b) complete and detailed information regarding the circumstances of the crime have
been correctly captured on CAS function 8.1.1.1.
(c) the case docket has been transferred on CAS to the detective service for further
investigation, and that a member of the detective service acknowledged receipt for
the docket on CAS.
ISSUES RAISED IN THE PREVIOUS MEETING
22
The role of the Station Commander in the Crime Recording Process, in line
with National Instruction 3 of 2011
(e) a case docket that must be registered and investigated at another police station is,
as soon as reasonably possible, transferred physically and on CAS to that station.
(f) if the CAS is off-line or not in operation, all newly reported case dockets are
recorded manually on a SAPS 441 form, so that the information recorded on the
SAPS 441 form can be captured on CAS, when CAS becomes operational.
(5) The CSC Commander must ensure that the case docket is handed over to
the data typist, or member who is responsible for the capturing of case
dockets on CAS and that the member or data typist is informed what and
how many charges to capture on CAS.
ISSUES RAISED IN THE PREVIOUS MEETING
23
The role of the Crime Information Office (CIO)/CIMAC, in line with National
Instruction 3 of 2011
The CIO must:
(a) conduct daily case docket analysis and systems audit to collect information
regarding reported crime;
(b) compile a Crime Pattern Analysis and Crime Threat Analysis on the reported crimes;
(c) identify flashpoints or hot spots in the station area on each category of crime
features; and
(d) establish the relationship between the flashpoints or hot spots and certain
geographical features (eg. highways, open areas or patches of veld, the location of
train stations, taxi-ranks, shebeens, taverns, nightclubs, etc.).
ISSUES RAISED IN THE PREVIOUS MEETING
24
The CIO also have to do field work and this includes the following:
(a) Visiting flashpoints or hot spots at peak times of occurrence of identified
crimes to identify environmental factors (both physical and social) that
may cause or be conclusive to the specific crime being committed in that
area. Photographs of these features must be taken.
(b) Interview people at these flashpoints or hot spots (as well as victims and
witnesses) in order to determine why these localities are conducive to this
specific crimes.
(c) Visiting of crime scenes that are possibly linked to any series of crimes that
were identified through linkage analysis.
ISSUES RAISED IN THE PREVIOUS MEETING
25
(d) Interviewing of suspects or suspects already in custody, within the
constraints of the law and in consultation with the investigating officers.
(e) Interviewing all the investigating officers of a crime series in order to alert
them regarding possible linkages of their cases and to obtain more details
and information which could serve to confirm or deny the linkages between
specific cases.
ISSUES RAISED IN THE PREVIOUS MEETING
26
The CIO also has to brief members on shifts or reliefs (both in the
CSC and on patrol duties) before they report on duty and also debrief
them when they report off duty.
(g) The briefing sessions must include information, pertaining to flashpoints or
hot spots and peak times of occurrence of the identified crimes. It should
also focus on commonalities or common characteristics of cases and
descriptions of suspects and suspicious vehicles.
(h) The CSC personnel must be present in order to address problems that the
CIO experiences with the correctness and completeness of the capturing
of crime information on CAS.
ISSUES RAISED IN THE PREVIOUS MEETING 27
CRIME RECORDING PRIOR TO COMPLETION OF
ADJUDICATION PROCESS (ADVANTAGES AND
DISADVANTAGES) 28
ADVANTAGES DISADVANTAGES
Confirmed crime incidents only
registered in crime database
All incidents irrespective of validity is
registered in crime database
Unfounded cases eliminated prior to
registration in the crime database
Unfounded cases removed after
investigations is completed
Accurate and responsive utilisation
of resources to combat crime
Ill-informed utilisation of resources
to combat crime
Accurately depict the true picture of
crime at a glance
Prone to abuse - legitimate crime
incidents disposed as unfounded