Integrating activity spaces in health research: Comparing the VERITAS activity space questionnaire with 7-day GPS tracking and prompted recall

Yan Kestens (1) , Benoit Thierry (2) , Martine Shareck , Madeleine Steinmetz-Wood , Basile Chaix (3)

1 Département de médecine sociale et préventive
2 CHUM - Centre Hospitalier de l'Université de Montréal
3 iPLESP - Institut Pierre Louis d'Epidémiologie et de Santé Publique

Background: Accounting for daily mobility allows assessment of multiple exposure to environments. This study compares spatial data obtained (i) from an interactive mapbased 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 meters 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.

Mots clés: GPS VERITAS Activity locations Activity space multiple exposures; GPS; VERITAS; Activity locations; Activity space; multiple exposures

Domaines: Sciences de l'Homme et Société

Yan Kestens, Benoit Thierry, Martine Shareck, Madeleine Steinmetz-Wood, Basile Chaix. Integrating activity spaces in health research: Comparing the VERITAS activity space questionnaire with 7-day GPS tracking and prompted recall. Spatial and Spatio-temporal Epidemiology, 2018, 25, pp.1-9. ⟨10.1016/j.sste.2017.12.003⟩. ⟨hal-03882397⟩