How many days of global positioning system (GPS) monitoring do you need to measure activity space environments in health research?
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ABSTRACT:
SUBMITTER: Zenk SN
PROVIDER: S-EPMC5963999 | biostudies-literature | 2018 May
REPOSITORIES: biostudies-literature
Publications
How many days of global positioning system (GPS) monitoring do you need to measure activity space environments in health research?
Zenk Shannon N SN Matthews Stephen A SA Kraft Amber N AN Jones Kelly K KK
Health & place 20180501
This study examined the number of days of global positioning system (GPS) monitoring needed to measure attributes of an individual's routine activity space. Multiple alternative activity space representations (cumulative, mean daily), measures (kernel density, route buffer, convex hull), and attributes (area size, supermarkets, fast food restaurants, parks) were examined. Results suggested wide variability in required GPS days to obtain valid estimates of activity space attributes (1-23 days). I ...[more]
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