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Incident-based Uniform Crime Reporting Survey
Homicide Survey
General Social Survey on Victimization
Detailed data tables

Incident-based Uniform Crime Reporting Survey

The Incident-based Uniform Crime Reporting (UCR2) Survey collects detailed information on criminal incidents that have come to the attention of, and have been substantiated by Canadian police services. Information includes characteristics pertaining to incidents (weapon, location), victims (age, sex, accused-sex relationships) and accused persons (age, sex). In 2010, data from police services covered 99% of the population of Canada.

Homicide Survey

The Homicide Survey collects detailed information on all homicides that have come to the attention of, and have been substantiated by, Canadian police services. Information includes characteristics pertaining to incidents (weapon, location), victims (age, sex, accused-victim, relationship), and accused persons (age, sex). Coverage for the Homicide Survey has represented 100% of the population since recording began in 1961. The count for a particular year represents all homicides reported in that year, regardless of when the death actually occurred.

General Social Survey on Victimization

In 2009, Statistics Canada conducted the victimization cycle of the General Social Survey (GSS) for the fifth time. Previous cycles were conducted in 1988, 1993, 1999 and 2004. The objectives of the survey are to provide estimates of Canadians' personal experiences of eight offence types, examine risk factors associated with victimization, examine reporting rates to police, measure the nature and extent of spousal violence, measure fear of crime and examine public perceptions of crime and the criminal justice system.

Sampling

The target population included all persons 15 years and older in the 10 Canadian provinces, excluding full-time residents of institutions. The survey was also conducted in the three Canadian territories using a different sampling design and its results will be available in a separate report to be released in 2011. Households were selected by a telephone sampling method called Random Digit Dialling (RDD). Households without telephones or with only cellular phone service were excluded. These two groups combined represented approximately 9% of the target population (Residential Telephone Service Survey, (RTSS), December 2008). Therefore, the coverage for 2009 was 91%.

Once a household was contacted, an individual 15 years or older was randomly selected to respond to the survey. The sample in 2009 was approximately 19,500 households, a smaller sample than in 2004 (24,000).

Data collection

Data collection took place from February to November 2009 inclusively. The sample was evenly distributed over the 10 months to represent seasonal variation in the information. A standard questionnaire was administered by telephone using computer-assisted telephone interviewing (CATI). A typical interview lasted 45 minutes. Prior to collection, all GSS questions went through qualitative and pilot testing.

Response rates

Of the 31,510 households that were selected for the GSS Cycle 23 sample, 19,422 usable responses were obtained. This represents a response rate of 61.6%. Types of non-response included respondents who refused to participate, could not be reached, or could not speak English or French. Respondents in the sample were weighted so that their responses represent the non-institutionalized Canadian population aged 15 years or over, in the ten provinces. Each person who responded to the 2009 GSS represented roughly 1,400 people in the Canadian population aged 15 years and over.

Data limitations

As with any household survey, there are some data limitations. The results are based on a sample and are therefore subject to sampling error. Somewhat different results might have been obtained if the entire population had been surveyed. This Juristat article uses the coefficient of variation (CV) as a measure of the sampling error. Any estimate that has a high CV (over 33.3%) has not been published because the estimate is too unreliable. In these cases, the symbol 'F' is used in place of an estimate in the figures and data tables. An estimate that has a CV between 16.6 and 33.3 should be used with caution and the symbol 'E' is referenced with the estimate. Where descriptive statistics and cross-tabular analysis were used, statistically significant differences were determined using 95% confidence intervals.

Using the 2009 GSS sample design and sample size, an estimate of a given proportion of the total population, expressed as a percentage is expected to be within 0.95 percentage points of the true proportion 19 times out of 20.