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Title: Improving self-reports of active and sedentary behaviors in large epidemiologic studies.
Authors: Matthews CE,  Moore SC,  George SM,  Sampson J,  Bowles HR
Journal: Exerc Sport Sci Rev
Date: 2012 Jul
Branches: BB, NEB
PubMed ID: 22653275
PMC ID: PMC3388604
Abstract: Questionnaires that assess active and sedentary behaviors in large-scale epidemiologic studies are known to contain substantial errors. We present three options for improving measures of physical activity behaviors in large-scale epidemiologic studies, discuss the problems and prospects for each of these options, and highlight a new direction for measuring these behaviors in such studies.