Self-reported height and weight generally underestimate BMI. Using data from the 2005 Canadian Community Health Survey (CCHS) subsample, where both measured and self-reported height and weight were collected, Statistics Canada developed BMI correction equations that were applied in these estimates.
This indicator is calculated based on 2 years of pooled data from 2017 and 2018.
Data for the CCHS is collected yearly from a sample of approximately 65,000 respondents. Table 13-10-0113-01 presents estimates from 2-year combined data and features estimates for all provinces and territories as well as for health regions. The 2-year combined data has higher precision (less variability) than annual estimates; annual CCHS estimates are not available at the health region level.
Some values have data quality flags that indicate "use with caution" or "suppressed" due to high coefficients of variation: health regions with small populations and results disaggregated by age group or sex within small regions.
The CCHS covers the population age 12 and older living in the 10 provinces and 3 territories. Excluded from the survey's coverage are
- Persons living on reserves and in other Indigenous settlements in the provinces
- Full-time members of the Canadian Forces
- The population of institutionalized persons
- Persons living in 2 Quebec health regions: Nunavik Region and Terres-Cries-de-la-Baie-James Region
Altogether, these exclusions represent less than 3% of the Canadian population age 12 and older.