Table 2.

Sources of data for food outlet locations in the city of Vancouver, Canada

Data source	Description	Classifiers	Year
Gold standard
1.Ground-truthed primary data	Original data collected for the present study; identified retailers within 800 m buffers surrounding twenty-six Vancouver schools	Classification scheme (see online supplementary material, Supplementary File 1)	2015
Municipal
2.City of Vancouver Business Licences	Records of businesses operating in the City of Vancouver; required under License By-Law No. 4450	Business Type Business Subtype	2012 2015
3.Vancouver Coastal Health inspections lists	Health inspection records for restaurants, food stores, processors and other regulated facilities in the Vancouver Coastal Health service area	Facility Type	2015
Commercial
4.Pitney Bowes Software Canada Business Points	Geographic coordinates and attributes for businesses across Canada	NAICS codes SIC codes	2012
5.DMTI Spatial, Inc. Enhanced Points of Interest	Vector GIS database of recreational places and businesses across Canada	NAICS codes SIC codes	2013

GIS, geographic information system; NAICS, North American Industry Classification System; SIC, Standard Industrial Classification.