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Sources of validity evidence needed with self-report measures of physical activity.
MedLine Citation:
PMID:  22287447     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
BACKGROUND: Over the years, self-report measures of physical activity (PA) have been employed in applications for which their use was not supported by the validity evidence.
METHODS: To address this concern this paper 1) provided an overview of the sources of validity evidence that can be assessed with self-report measures of PA, 2) discussed the validity evidence needed to support the use of self-report in certain applications, and 3) conducted a case review of the 7-day PA Recall (7-d PAR).
RESULTS: This paper discussed 5 sources of validity evidence, those based on: test content; response processes; behavioral stability; relations with other variables; and sensitivity to change. The evidence needed to use self-report measures of PA in epidemiological, surveillance, and intervention studies was presented. These concepts were applied to a case review of the 7-d PAR. The review highlighted the utility of the 7-d PAR to produce valid rankings. Initial support, albeit weaker, for using the 7-d PAR to detect relative change in PA behavior was found.
CONCLUSION: Overall, self-report measures can validly rank PA behavior but they cannot adequately quantify PA. There is a need to improve the accuracy of self-report measures of PA to provide unbiased estimates of PA.
Authors:
Louise C Mâsse; Judith E de Niet
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of physical activity & health     Volume:  9 Suppl 1     ISSN:  1543-5474     ISO Abbreviation:  J Phys Act Health     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-01-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101189457     Medline TA:  J Phys Act Health     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S44-55     Citation Subset:  IM    
Affiliation:
Dept of Pediatrics, School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada.
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