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Validation testing of a three-component model of Short Form-36 scores
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Authors
Suzukamo, YoshimiFukuhara, Shunichi
Green, Joseph
Kosinski, Mark
Gandek, Barbara
Ware, John E. Jr.
UMass Chan Affiliations
Department of Quantitative Health SciencesDocument Type
Journal ArticlePublication Date
2011-03-01Keywords
Health SurveysHealth Status
Questionnaires
Activities of Daily Living
Quality of Life
Sickness Impact Profile
Biostatistics
Epidemiology
Health Services Research
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Show full item recordAbstract
OBJECTIVE: The two-component factor structure underlying Short Form-36 (SF-36) summary scores may not be valid worldwide. We studied a three-component model of SF-36 scores in Japan. STUDY DESIGN AND SETTING: The SF-36 scores came from representative samples of the population of Japan. Factor analysis and structural equation modeling were used. The two-component model gave physical component summary (PCS) scores and mental component summary (MCS) scores. The three-component model gave scores on the PCS, the MCS, and also on the third component, which we call the role component summary (RCS) score. These were evaluated with external criteria. RESULTS: In the three-component model, the RCS was strongly associated with the role-physical, social functioning, and role-emotional subscales, whereas the PCS and MCS were associated with the physical functioning and mental health subscales, as expected. The goodness-of-fit index was 0.945 for the three-component model and 0.935 for the two-component model. The PCS discriminated between groups stratified by comorbid conditions, and the MCS discriminated between groups stratified by psychological depression. Absence from work was associated with both PCS and RCS. CONCLUSION: The three-component model is better than the two-component model, and it provides more useful PCS and MCS scores. Criteria for validation testing of the RCS are needed.Source
J Clin Epidemiol. 2011 Mar;64(3):301-8. Link to article on publisher's siteDOI
10.1016/j.jclinepi.2010.04.017Permanent Link to this Item
http://hdl.handle.net/20.500.14038/47839PubMed ID
20800993Related Resources
Link to Article in PubMedae974a485f413a2113503eed53cd6c53
10.1016/j.jclinepi.2010.04.017