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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

1996 CanCHEC

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).

January 2018 update: Sampling weights were created for the 1991 CanCHEC to 1) make the cohort more representative of the target population (i.e. non-institutional population aged 25+) and 2) reduce bias due to missed links. Briefly, census long-form weights were adjusted by model parameters on the probability of linking to a tax record. These sampling weights were then calibrated following the raking method and incorporated trimming to prevent negative or excessively large weights.