Validity of a Scale Assessing the Built Environment for Physical Activity
March 12th, 2010 Posted by: admin
American Journal of Health Behavior 34(4): 420-431 Objectives: To examine the construct validity and reliability of existing self-report items measuring perceptions of the built environment for physical activity. Methods: Exploratory factor analysis, internal consistency, and nonparametric scaling were assessed using data from a cross-sectional sample of adults (n = 479). Results: A new 5-factor model was identified. Internal consistency and scaling reliabilities were moderate to strong, providing support for the new structure. Conclusions: Further studies are needed to confirm these results. Subscales should be treated as indices and use sum scores in analysis to detect subtle variations and provide more precise power calculations.
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