Reliability and validity of culturally adapted Turkish Short Musculoskeletal Function Assessment questionnaire (SMFA-TR)

Karaismailoglu B. , Yetismis S., Kaynak G. , Karaismailoglu B.

International Journal of Rheumatic Diseases, vol.23, no.7, pp.928-938, 2020 (Journal Indexed in SCI Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 7
  • Publication Date: 2020
  • Doi Number: 10.1111/1756-185x.13885
  • Title of Journal : International Journal of Rheumatic Diseases
  • Page Numbers: pp.928-938


© 2020 Asia Pacific League of Associations for Rheumatology and John Wiley & Sons Australia, LtdAim: This study aimed to culturally adapt and validate the Turkish version of the Short Musculoskeletal Function Assessment Questionnaire (SMFA-TR) which primarily assesses the functional status of patients. Methods: The translation and cross-cultural adaptation of SMFA to Turkish was made by the standardized procedure and tested for clinimetric quality. The following analyses were made to evaluate clinimetric quality of the SMFA-TR: reliability with factor analysis and Chronbach's α (construct validity), correlations between SMFA-TR and Short Form (SF)-36 (concurrent validity), test-retest reliability (intraclass correlation analyses), floor and ceiling effects. The questionnaire was applied to 166 patients with musculoskeletal problems. All patients filled in the SMFA-TR and the validated Turkish SF-36 questionnaire. Forty-two patients returned to complete the same questionnaires at 10 days. Results: Factor analysis revealed a 4-factor structure of the SMFA-TR. Cronbach's α values were over 0.88 for both original subscales (dysfunction and bother) of the SMFA. Internal consistency (0.88-0.94) and test-retest reliability coefficients (0.90-0.98) were high for both subscales. Turkish SF-36 questionnaire conventional subscales showed significant correlations with SMFA-TR subscales. No floor or ceiling effects were found. Conclusion: The Turkish version of the SMFA was found to be reliable and valid for Turkish-speaking patients with musculoskeletal injuries or disorders.