- Turkish Journal of Medical Sciences
- Vol: 48 Issue: 3
- Reliability and validity of the Turkish version of the Foot Function Index in patients with foot dis...
Reliability and validity of the Turkish version of the Foot Function Index in patients with foot disorders
Authors : Bahar KÜLÜNKOĞLU, Neslihan FIRAT, Nazim Tolgahan YILDIZ, Afra ALKAN
Pages : 476-483
View : 14 | Download : 3
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :Background/aim: The Foot Function Index (FFI) is a valid, reliable, and widely used self-reported questionnaire for the foot. The purpose of this study was to provide evidence for the validity and reliability of the Turkish version of the FFI (FFI-TR) among patients with foot disorders such as plantar fasciitis, hallux valgus, pes planus, and hammertoe deformities. Materials and methods: One hundred and fifty-nine patients with foot disorders were enrolled. The psychometric properties of the previously translated and adapted FFI-TR were assessed. The internal consistency and test-retest reliability were evaluated. Construct validity was examined for correlations with the Short Form-36 (SF-36) questionnaire. Results: Cronbach's alpha ranged between 0.821 and 0.938. Reproducibility was satisfactory, with intraclass correlation coefficient values between 0.960 and 0.985. Weak correlations were found between FFI-TR and some SF-36 subscales for validity (|rho| < 0.30). There was a ceiling effect for the activity limitation subscale. There were no floor effects for any items or application times. Good accuracy was determined for all scores. Conclusion: FFI-TR is a reliable and valid scale. This tool can be used in routine practice and clinical research for evaluating foot disorders and foot-related functional impairments.Keywords : Foot health status, Foot Function Index, outcome measurements, reliability, validity