ENVIRONMENTAL EXPOSURE DATA
The CIHR-funded Canadian Urban Environmental Health Research Consortium (CANUE) collates and generates standardized area-level environmental data on air and noise pollution, land use, green/natural spaces, climate change/extreme weather, and socioeconomic conditions and links this data to existing Canadian cohort studies and administrative health databases. CANUE exposure datasets have been merged with the national harmonized CanPath dataset using the 6-digit residential postal code of participants and are now available to researchers. These datasets include: - Canadian Active Living Environments Database (Can-ALE) - Material and Social Deprivation Index (MSDI) - Normalized Difference Vegetation Index (NDVI; i.e. “greenness” metrics) - Annual average nitrogen dioxide (NO2) exposure - Annual average ozone (O3) exposure - Annual average fine particulate matter (PM2.5) exposure, version 1 - Annual fine particulate matter air pollution (PM2.5) exposure, version 2 - Annual average sulfur dioxide (SO2) exposure - Weather and Climate metrics - Satellite based nighttime light - Access to employment - Canadian Marginalization Index - Annual water balance metrics - Local climate zones - Proximity to water - Proximity to roads by road type Data use conditions including required acknowledgements and citations can be found on the CANUE data portal at : www.canuedata.ca
Harmonization Study Design
Exposure datasets were developed using a range of data sources and approaches, which are described in dataset-specific metadata documents and available at www.canuedata.ca. For each dataset, exposure values were indexed to every postal code in Canada in order to facilitate linkage with health databases. Annual exposure metrics were prepared for air quality (SO2, O3, PM2.5, NO2), greenness, nighttime light, proximity to water bodies, proximity to roads, and weather and climate metrics. The MSDI, Can-ALE, Can-Marg, and Access to Employment datasets cover select Canadian census years.
CANUE exposure datasets were linked to the CanPath national harmonized dataset using participants’ 6-digit residential postal code at date of recruitment. When an annual exposure dataset was not available for a CanPath baseline assessment year, the closest year for which that exposure was available was used for linkage. Whenever available, all annual exposure files between the years 2000 and 2019 were linked to each CanPath participants, thereby allowing researchers to construct custom exposure time windows for their research projects. Likewise, whenever available, all Census-based datasets for Census years 2001, 2006, 2011 and 2016 were linked to the CanPath database. Participants for which baseline residential 6-digit postal code was not valid or unavailable are assigned missing data for all environmental exposures.
Individual Studies Included
Harmonization Projects Included
Last Update: 2021-10-04 22:42