RELIABILITY AND VALIDITY OF THE TURKISH VERSION OF THE COMPREHENSIVE LOWER LIMB AMPUTEE SOCKET SURVEY

Purpose: The aim of this study was to translate the Comprehensive Lower Limb Amputee Socket Survey (CLASS) into Turkish and examine its reliability and validity in lower limb amputees. Materials and Methods: This cross-sectional study included 97 lower limb amputees. Cronbach's alpha coefficient was used to evaluate internal consistency, and intraclass correlation coefficient was used to evaluate test -retest reliability. The retest of the CLASS was applied one week later. The satisfaction with the prosthesis subscale of the Trinity Amputation and Prosthesis Experience Scale (TAPES) was used to assess convergent validity. Results: The mean age of the participants was 46.78 +/- 15.04 years and 71.1 % were male. Internal consistency was found to be high for all domains of the Turkish CLASS (Cronbach's alpha ranged from 0.81 to 0.90). Test-retest reliability was found to be high (intraclass correlation coefficient ranged from 0.82-0.95). A significant relationship was found between all domains of the CLASS and TAPES prosthesis satisfaction subscale (r=0.553 for stability domain, r=0.509 for suspension domain, r=0.482 for comfort domain, r= 0.444 for appearance domain, p<0.001). Conclusion: The results of this study showed that the Turkish version of the CLASS is a reliable and valid tool for assessing user's perception about socket fit in lower limb prosthesis users.