Document Detail

Validity and reliability of single-item questions about physical activity.
MedLine Citation:
PMID:  11579928     Owner:  NLM     Status:  MEDLINE    
The Japan Collaborative Cohort Study for Evaluation of Cancer Risk Sponsored by Monbusho (JACC Study) included in its self-administered questionnaires some single-item questions concerning physical activity. We examined the validity of the questions among 1,730 Japanese adults and the reliability of the questions among 1,075 Japanese adults. The validity of the sports and physical exercise questions was estimated by comparing the self-administered questionnaire responses with the time spent on the activity and the energy expenditure index for the previous 12-month period, elicited by the interviewing method used in the Japan Lifestyle Monitoring Study with a minor modification. The Spearman's rank correlation coefficients ranged from 0.43 to 0.60, showing moderate correlations. On the other hand, test-retest reliability was estimated by comparing the responses from two separate surveys conducted roughly one year apart. Weighted kappa coefficients of sports and physical exercise questions, classified according to sex and age, ranged from 0.39 to 0.56, showing moderate reliability; and those of a question about walking ranged from 0.25 to 0.39, showing fair reliability. We suggest that measuring physical activity level with these single-item questions may be appropriate for establishing baseline data that reflects long-term physical activity in a large-scale cohort study targeting lifestyle-related diseases.
N Iwai; S Hisamichi; N Hayakawa; Y Inaba; T Nagaoka; H Sugimori; N Seki; K Sakata; K Suzuki; A Tamakoshi; Y Nakamura; A Yamamoto; Y Nishino; A Ogihara; N Okamoto; H Suzuki; S Morioka; Y Ito; K Wakai; T Ojima; H Tanaka; T Nose; Y Ohno
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Journal of epidemiology / Japan Epidemiological Association     Volume:  11     ISSN:  0917-5040     ISO Abbreviation:  J Epidemiol     Publication Date:  2001 Sep 
Date Detail:
Created Date:  2001-10-02     Completed Date:  2001-11-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9607688     Medline TA:  J Epidemiol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  211-8     Citation Subset:  IM    
Department of Public Health, Faculty of Medicine, Tottori University, Yonago, Japan.
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MeSH Terms
Age Distribution
Cohort Studies
Japan / epidemiology
Life Style*
Middle Aged
Neoplasms / epidemiology,  prevention & control*
Questionnaires / standards*
Reproducibility of Results
Risk Assessment / methods
Sex Distribution
Sports / statistics & numerical data
Statistics, Nonparametric

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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