Health Place 2021 Jul 31:102641. Epub 2021 Jul 31.
Department of Geography & Environment, Western University, 1151 Richmond Street, London, Ontario, N6A 3K7, Canada; Department of Pediatrics, Department of Epidemiology & Biostatistics, School of Health Studies, Western University, 1151 Richmond Street, London, Ontario, N6A 3K7, Canada; Human Environments Analysis Lab, Western University, 1151 Richmond Street, London, Ontario, N6A 3K7, Canada. Electronic address:
Exposure assessment in the context of mobility-oriented health research often is challenged by the type of spatial measurement technique used to estimate exposures to environmental features. The purpose of this study is to compare smartphone global positioning system (GPS), shortest network path mobility, and buffer-based approaches in estimating exposure to outdoor food and beverage advertising among a sample of 154 teenagers involved in the SmartAPPetite study during 2018 in London, Ontario, Canada. Participants were asked to report their home postal code, age, gender identity, ethnicity, and number of purchases they had made at a retail food outlet in the past month. Read More