Measurement equivalence of the SF-36 in the canadian multicentre osteoporosis study

Health and Quality of Life Outcomes

William D Leslie⁵  K Shawn Davison⁶  Wilma Hopman¹  Tanveer Towheed¹  Jonathan D Adachi³  Beliz Acan Osman²  Lisa M Lix⁴ 

[1] Department of Community Health and Epidemiology, Carruthers Hall, Queen's University, Kingston, ON, Canada;Health Quality Council, 111 Research Drive, Saskatoon, SK, Canada;Faculty of Health Sciences, McMaster University, 1280 Main St. W, Hamilton, ON, Canada;School of Public Health, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, Canada;Department of Internal Medicine, University of Manitoba, St. Boniface General Hospital, 409 Tache Avenue, Winnipeg, MB, Canada;College of Kinesiology, University of Saskatchewan, 87 Campus Drive, Saskatoon, Canada

关键词: Confirmatory factor analysis;    Equivalence;    Psychometrics;    Health-related quality of life;    SF-36;   

Others  :  825819
DOI  :  10.1186/1477-7525-10-29

 received in 2011-04-11, accepted in 2012-03-13,  发布年份 2012

【 摘 要 】

Background

Studies that compare health-related quality of life (HRQOL) and other patient-reported outcomes in different populations rest on the assumption that the measure has equivalent psychometric properties across groups. This study examined the measurement equivalence (ME) of the 36-item Medical Outcomes Study Short Form Survey (SF-36), a widely-used measure of HRQOL, by sex and race in a population-based Canadian sample.

Findings

SF-36 data were from the Canadian Multicentre Osteoporosis Study, a prospective cohort study that randomly sampled adult men and women from nine sites across Canada. Confirmatory factor analysis (CFA) techniques were used to test hypotheses about four forms of ME, which are based on equality of the factor loadings, variances, covariances, and intercepts. Analyses were conducted for Caucasian and non-Caucasian females (n = 6,539) and males (n = 2,884). CFA results revealed that a measurement model with physical and mental health factors provided a good fit to the data. All forms of ME were satisfied for the study groups.

Conclusions

The results suggest that sex and race do not influence the conceptualization of a general measure of HRQOL in the Canadian population.

【 授权许可】

   
2012 Lix et al; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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