Yan Kestens1, Benoit Thierry2, Martine Shareck3, Madeleine Steinmetz-Wood4, Basile Chaix5. 1. Centre de Recherche du CHUM, Montreal, Canada; Department of Social and Preventive Medicine, Montreal University, Canada. Electronic address: yan.kestens@umontreal.ca. 2. Centre de Recherche du CHUM, Montreal, Canada. 3. London School of Hygiene and Tropical Medicine, London, UK. 4. Geography Department, McGill University, Canada. 5. Inserm, UMR-S 1136, Pierre Louis Institute of Epidemiology and Public Health, Faculté de médecine Saint-Antoine, Paris, France.
Abstract
BACKGROUND: Accounting for daily mobility allows assessment of multiple exposure to environments. This study compares spatial data obtained (i) from an interactive map-based questionnaire on regular activity locations (VERITAS) and (ii) from GPS tracking. METHODS: 234 participants of the RECORD GPS Study completed the VERITAS questionnaire and wore a GPS tracker for 7 days. Analyses illustrate the spatial match between both datasets. RESULTS: For half of the sample, 85.5% of GPS data fell within 500 m of a VERITAS location. The median minimum distance between a VERITAS location and a GPS coordinate ranged from 0.4 m for home to slightly over 100 m for a recreational destination. CONCLUSIONS: There is a spatial correspondence between destinations collected through VERITAS and 7-day GPS tracking. Both collection methods offer complementary ways to assess daily mobilities, useful to study environmental determinants of health and health inequities.
BACKGROUND: Accounting for daily mobility allows assessment of multiple exposure to environments. This study compares spatial data obtained (i) from an interactive map-based questionnaire on regular activity locations (VERITAS) and (ii) from GPS tracking. METHODS: 234 participants of the RECORD GPS Study completed the VERITAS questionnaire and wore a GPS tracker for 7 days. Analyses illustrate the spatial match between both datasets. RESULTS: For half of the sample, 85.5% of GPS data fell within 500 m of a VERITAS location. The median minimum distance between a VERITAS location and a GPS coordinate ranged from 0.4 m for home to slightly over 100 m for a recreational destination. CONCLUSIONS: There is a spatial correspondence between destinations collected through VERITAS and 7-day GPS tracking. Both collection methods offer complementary ways to assess daily mobilities, useful to study environmental determinants of health and health inequities.
Authors: Adam Drewnowski; Anju Aggarwal; Chelsea M Rose; Shilpi Gupta; Joseph A Delaney; Philip M Hurvitz Journal: Spat Spatiotemporal Epidemiol Date: 2019-07-12
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Authors: A Drewnowski; D Arterburn; J Zane; A Aggarwal; S Gupta; P M Hurvitz; A V Moudon; J Bobb; A Cook; P Lozano; D Rosenberg Journal: SSM Popul Health Date: 2018-12-28