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Comparing the SF-12 and SF-36 health status questionnaires in patients with and without obesity.
- Source :
-
Health & Quality of Life Outcomes . 2008, Vol. 6, Special section p1-7. 7p. 2 Charts, 2 Graphs. - Publication Year :
- 2008
-
Abstract
- Objective: To assess how well the SF-36, a well-validated generic quality of life (QOL) instrument, compares with its shorter adaptation, the SF-12, in capturing differences in QOL among patients with and without obesity. Methods: We compared the correlation between the physical (PCS) and mental (MCS) component summary measures of the SF-12 and SF-36 among 356 primary care patients using Pearson coefficients (r) and conducted linear regression models to see how these summary measures captures the variation across BMI. We used model R² to assess qualitatively how well each measure explained the variation across BMI. Results: Correlations between SF-12 and SF-36 were higher for the PCS in obese (r = 0.89) compared to overweight (r = 0.73) and normal weight patients (r = 0.75), p < 0.001, but were similar for the MCS across BMI. Compared to normal weight patients, obese patients scored 8.8 points lower on the PCS-12 and 5.7 points lower on the PCS-36 after adjustment for age, sex, and race; the model R² was higher with PCS-12 (R² = 0.22) than with PCS-36 (R² = 0.16). BMI was not significantly associated with either the MCS-12 or MCS-36. Conclusion: The SF-12 correlated highly with SF-36 in obese and non-obese patients and appeared to be a better measure of differences in QOL associated with BMI. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14777525
- Volume :
- 6
- Database :
- Academic Search Index
- Journal :
- Health & Quality of Life Outcomes
- Publication Type :
- Academic Journal
- Accession number :
- 35703247
- Full Text :
- https://doi.org/10.1186/1477-7525-6-11