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CanCHEC (Canadian Census Health and Environment Cohort)


2001 CanCHEC

The 2001 Canadian Census Health and Environment Cohort (CanCHEC) is a large population-based dataset that allows for the examination of mortality outcomes by census characteristics (i.e. ethnocultural and socioeconomic factors).

The 2001 CanCHEC was created from three different data sources:

  • 2001 Census of Population
  • T1 Universe Files (place of residence only)
  • Canadian Mortality Database

To be considered for inclusion of this Cohort, individuals had to meet the following criteria:

  • Had been enumerated by the 2001 long-form questionnaire (2B or 2D) and were aged 19 years or older on Census day (May 15, 2001);
  • Had been enumerated as residents of Canada (i.e., excluding overseas nationals);
  • Had filed a tax return in the 2000 or 2001 tax years and therefore be eligible for linkage to tax.

The above restrictions excluded the institutional population, those missed by the 2001 Census, and non-tax filers.


1991 CanCHEC

The current version of the 1991 Canadian Census Health and Environment Cohort (CanCHEC) was derived on linkage-based dataset compiling socio-economic, demographic, cancer, mortality, and place of residence data (as reported on T1 tax files) for 2.5 million Canadians over an eventual 20-year follow-up period.

The 1991 Canadian Census Health and Environment Cohort contains variables measuring population characteristics, place of residence, cancer incidence, and mortality. These variables were obtained from six different data sources:

  • 1991 Canadian Long-form Census (2B/2D), non-institutional population
  • 1984-2011 Historical Tax Summary Files (HTSF) (place of residence only)
  • 1981-1983 T1 Personal Master File (T1 PMF) (place of residence only)
  • 1969-1991 Canadian Cancer Database (CCDB),
  • 1992-2010 Canadian Cancer Registry (CCR), and
  • 1991-2011 Canadian Mortality Data Base (CMDB).