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NSW BUREAU OF CRIME STATISTICS AND RESEARCH, RECORDED CRIME STATISTICS DATABASE
SCOPE 5 The COPS database used by NSW Police includes information on all reported criminal incidents, data on police actions, and other occurrences attended by, or reported to, police. The scope of the dataset is police activities, including:
6 Excluded from the scope of the COPS database are offences which have no associated action by NSW Police, such as offences against Commonwealth laws processed under Commonwealth jurisdiction. However, if NSW Police were involved in investigating an offence against Commonwealth laws then it would be included in COPS. 7 The COPS data extracted for the BOCSAR Recorded Crime Statistics Database, are verified records of criminal incidents, persons of interest and victims. A verified record is one which has been signed off by the recording officer or supervisor. The selected data on domestic violence which is extracted directly from the COPS database also includes only verified incidents. 8 In this product, the scope of the Apprehended Violence Order (AVO) data is only those AVOs granted in Local Courts for NSW residents. REFERENCE PERIOD 9 Each quarter, BOCSAR receives a one year extract of information from the NSW Police. The reference period for recorded crime and Apprehended Violence Order data presented in this product is the 2005 calendar year based on the latest extract. KEY DATA ITEMS 10 The following key data items are used in this product. 11 Apprehended Violence Order (AVO): An order that a court makes to protect people. AVOs protect people by ordering the defendant to refrain from certain activities. The defendant must obey the orders made by the Court. The type of AVO depends upon the relationship between the applicant and the defendant. The AVO type refers to either domestic violence or non-domestic (personal) violence. 12 Criminal incident: A criminal incident is defined as an activity detected by or reported to police which:
13 A criminal incident can consist of one or more offences of the same type (and their related victims and offenders) which are grouped into the same unique occurrence if they are committed by the same person or group of persons AND if:
14 For example, one offender assaulting two victims would be counted as one criminal incident. Alternatively, two criminal incidents are recorded in the COPS database if there are two distinct offence types involved (e.g. demand money with menaces and assault) even if the same parties were involved at the same time and in the same place. A criminal incident can have more than one person of interest. 15 Domestic violence: The term domestic relates to any person who cohabited with, or is a carer of, the victim. This can include anyone who has been in a relationship with, and/or who is legally related to, the victim. Where assault or other forms of violence occur in a COPS event police officers are required to record whether it is related to domestic violence. If no criminal offence is recorded, but domestic violence is indicated, a Domestic Violence - no offence COPS incident is recorded. 16 Offence type: Offence categories are derived from COPS incident types; a unique police classification which encompass both offences as well as other police activities. The COPS extract used by BOCSAR is based on a set of offence categories aligned to the 1995 Australian National Classification of Offences (ANCO) issued by the ABS (cat. no. 1234.0). In this product the offence types and sub-categories reported are: 17 Assault
18 Sexual offences
19 Robbery
20 Theft
21 Arson 22 Malicious damage to property 23 Illicit drug offences
24 Driving offences
GEOGRAPHY 25 The COPS database has mandatory suburb and postcode fields in which geographical details are entered. A criminal incident is assigned to a region when the location of the incident falls within that region. Data is concorded from postcodes to Local Government Areas (LGAs) using a concordance which proportionately allocates population. COLLECTION METHODOLOGY 26 The COPS database is compiled by NSW Police Service, who enter details of all crimes that are either reported to them by a victim or witness, or which they have detected during the course of their duty. Records are verified by the recording officer or supervisor. A verified record is a record which has been signed off by the recording officer or supervisor. 27 Records created in the COPS database undergo an edit check. Records for a lesser offence can be verified by the entering officer, otherwise records are sent to a supervisor for verification. 28 BOCSAR receive an extract of the COPS database which forms the basis of the BOCSAR Recorded Crime Statistics Database. 29 The BOCSAR Recorded Crime Statistics Database is edited to remove offences not included in their collection and to remove invalid postcodes. ACCURACY 30 Criminal incidents are included in the counting period in which they were reported to or detected by police. In most cases criminal incidents are recorded on the COPS database on the day of reporting. However, because the reporting date and recording date may differ, it is possible for updating of data to occur. That is, data extracted for a specified period of time (incidents reported in 2004, for example) may differ according to the date of extraction. This updating is minimal however, and is unlikely to affect trends in the data. 31 COPS data relates to the date the offence comes to the attention of the police, not the date on which the offence occurs. This is particularly relevant to offences such as homicide and sexual assault. 32 Recorded crime statistics for some offence categories do not accurately reflect the actual level of crime in the community. This is because the number of incidents recorded may be affected by extraneous factors which are not easily measured, in particular:
33 As this collection is effectively a census of reported crime, the data are not subject to sampling variability. However, other inaccuracies collectively referred to as non-sampling error may affect the data. These non-sampling errors may arise from a number of sources, including:
COMPARISON WITH OTHER DATA SOURCES 34 Data sourced directly from the COPS database will differ from data published by BOCSAR because COPS data includes both verified and non-verified records, whereas BOCSAR data exclude non-verified records. COLLECTION HISTORY 35 COPS data are affected by legislative changes. This includes the creation of new offences as well as major initiatives such as mandatory reporting. The results of Ministerial and Ombudsman reviews of legislation can also affect the way offence and activity incidents are recorded and reported. These types of changes may have an impact on reported crime statistics over time. 36 BOCSAR has received COPS data since 1994. PUBLISHED DATA 37 The major annual publication produced by BOCSAR is NSW Recorded Crime Statistics. Information about the COPS data used by BOCSAR is available in that publication. Information on Apprehended Violence Orders is published by BOCSAR in NSW Criminal Court Statistics. RELATED WEB SITES 38 The Bureau of Crime Statistics and Research web site can be found at <www.lawlink.nsw.gov.au/bocsar>. Document Selection These documents will be presented in a new window.
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