Version 1
: Received: 5 September 2020 / Approved: 7 September 2020 / Online: 7 September 2020 (03:24:54 CEST)
How to cite:
Ahmadi, N.; Rajati, M.; Khazaei Pool, M.; Salehi, L.; Ebrahimi, M.; Rajati, F. Short Form 36-Item Health Survey (SF-36) in Patients with Physical Disabilities: Validity and Reliability. Preprints2020, 2020090152
Ahmadi, N.; Rajati, M.; Khazaei Pool, M.; Salehi, L.; Ebrahimi, M.; Rajati, F. Short Form 36-Item Health Survey (SF-36) in Patients with Physical Disabilities: Validity and Reliability. Preprints 2020, 2020090152
Ahmadi, N.; Rajati, M.; Khazaei Pool, M.; Salehi, L.; Ebrahimi, M.; Rajati, F. Short Form 36-Item Health Survey (SF-36) in Patients with Physical Disabilities: Validity and Reliability. Preprints2020, 2020090152
APA Style
Ahmadi, N., Rajati, M., Khazaei Pool, M., Salehi, L., Ebrahimi, M., & Rajati, F. (2020). Short Form 36-Item Health Survey (SF-36) in Patients with Physical Disabilities: Validity and Reliability. Preprints. https://doi.org/
Chicago/Turabian Style
Ahmadi, N., Mohammad Ebrahimi and Fatemeh Rajati. 2020 "Short Form 36-Item Health Survey (SF-36) in Patients with Physical Disabilities: Validity and Reliability" Preprints. https://doi.org/
Abstract
Aim: The aim of this study was to assess the performance of the SF-36 health survey (SF-36) in a sample of subjects with physical disabilities. Material and Methods: 305 patients recruited using the convenient sampling method from September 2019 to March 2020 in Kermanshah, Iran. Another similar 300 patients were selected to assess the confirmatory factor analysis (CFA). Results: The Cronbach’s α ranged from 0.70 to 0.93, and intra-class correlation coefficients from 0.71 to 0.88; and with the no ceiling and floor effect for two main subscales. Convergent validity was supported by moderate to good correlation between SF-36 subscales and Moorong self-efficacy subscales (r= 0.25- 0.53). The SF-36 divergently validated with HADS total score and subscales (r= -0.24- -0.65), concurrently validated with its subscales (r=0.49- 0.88), and physically discriminated between persons with different level of disability (t-test: p<0.001). Factorial analysis identified seven factors, confirmed with second-order in another 300 samples (chi-square (χ2/df) = 2.61(p < .001); RMSEA = 0.07 (90% CI = 0.07–0.08); AGFI=0.75; GFI = 0.78; CFI= 0.85; and NFI = 0.78). Conclusions: the SF-36 is a reliable and valid tool in physical disables. However, SF-36 shows insufficient eight-factor validity. Future studies should focus on evaluating other psychometric properties, such as sensitivity to change in subjects with physical disabilities.
Keywords
Disabled Persons; Health Status; Iran; Psychometrics; Quality of Life; Reliability
Subject
Medicine and Pharmacology, Psychiatry and Mental Health
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
