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CanBCC (Canadian Birth-Census Cohort)


The primary purpose of the Canadian Birth-Census cohorts is to add long-form Census information to births, stillbirths and infant deaths in Canada, including socio-economic information about the parents, to study the associations between these characteristics and birth and perinatal outcomes.

The cohorts are based on the intersection between in-scope births (those occurring in the two years prior to Census Day) and the Census long-form sample. A further modest reduction (about 10%) in cohort size can be attributed to missed links. The final sizes are 97 006 births for the 1996 cohort (out of a possible 466 170 in-scope births), and 135 426 births for the 2006 cohort (out of a possible 687 340 in-scope births). A cohort weight - which adjusts for the census sampling design, census non-response, and missed linkages between the birth and census databases - and 500 bootstrap weights – to account for the variability arising from sampling, non-response, the linkage process and the stochastic variability inherent in vital events - have been generated for each of these cohorts.