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The Crime Scene Justice Data and the Case of Multiple Files in GSS 18. Chuck Humphrey University of Alberta. Atlantic DLI Workshop April 20-21, 2006. Outline. a. Crime and Victimization Surveys b. Crime data in the context of the data reference interview
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University of Alberta
Atlantic DLI Workshop
April 20-21, 2006
a. Crime and Victimization Surveys
b. Crime data in the context of the data reference interview
c. Crime data structures from the context of the unit of observation
d. Working with GSS 18 as an example of a survey with multiple files
* See Justice Data Survey List handout.
* See the Justice Data Survey List handout.
Statistics are processed data organized for display purposes.
Data, which are stored in files in a specific structure, require processing to be presented or displayed.
[Think of statistics as having been published.]
Sources of Statistics:
Government departments or agencies
Commercial sector sources
Formats for Statistics:
For example, Citizenship & Immigration Canada produce their Facts & Figures statistical report from the Landed Immigrant Database System (LIDS). Having access to LIDS allows one to produce many more tables than are published in Facts & Figures.
Aggregate data are statistics that have been organized into a data structure for further processing. The data structure will be organized around time, geography, social content or a combination of these characteristics.
Microdata consist of the information collected from the objects of the unit of observation and stored in a data structure for subsequent processing.
[Think of data as having been produced and disseminated.]
For example, the Edmonton Police Service provides neighbourhood crime statistics on their website. On the other hand, the office of the Solicitor General of Alberta refers people to CCJS statistics.
Statistics Canada website provides access to e-tables. The DSP provides access to e-publications and E-STAT access to CANSIM. DLI provides access to CCJS tables in Beyond 20/20 format and the GSS. The Research Data Centres provide access to some justice confidential data files.
For the Uniform Crime Reporting Survey, use the sidebar menu for “Additional Information” and find entries for the 2004 UCR Survey in the Daily, in summary tables in Canadian Statistics, in publications in the online catalogue and in tables from CANSIM.
If it’s data, it has structure.
All Canadian municipal, provincial and federal police services that were active on June 15th of the survey year.
All crimes that come to the attention of the police.
All homicides that occur in Canada. Consists of three main questionnaires: Incident, Victim and Suspect.
All legal aid services in Canada.
All federal statute charges completed in youth courts of accused persons aged 12 to 17 years at the time of the offence.
All provincial and territorial courts and federal courts comprising the Supreme Court of Canada, the Federal Court of Canada, the Tax Court of Canada and the Office of the Commissioner for Federal Judicial Affairs.
All federal statute charges in provincial and supreme criminal courts in Canada.
All criminal prosecution branches in provincial jurisdictions and of Justice Canada.
All adult correctional services in Canada.
Counts of adults and youth in custody of provincial, territorial and federal correctional services.
All provincial and territorial youth correctional services.
All Alternative Measures cases for youth in Canada.
All cases in maintenance enforcement programs.
All residential agencies serving women victims of family violence.
Geography can serve as the unit of observation.
This table is from the CCJS series on the DLI FTP site (file crimemun.ivt)
Here categories of offences serve as the unit of observation.
This is the same table from the CCJS series as the previous slide but reshaped.