Reliability and validity of the Turkish version of the satisfaction module of the Orthotics and Prosthetics Users' Survey

Abstract

Background: Evaluation of prosthesis and orthosis (P&O) devices and service satisfaction in patients using P&O are important to understand the patient perspective and improve the quality of devices and the services.Objective: The aim of this study was to translate the original Orthotics and Prosthetics Users' Survey (OPUS) satisfaction module into Turkish and examine its psychometric properties in lower limb P&O users. Study Design: Cross-sectional study. Methods: The Turkish versions of the OPUS-Client Satisfaction with Device (CSD) and Service (CSS) modules were applied to 157 individuals using a lower limb prosthesis or orthosis. The retest of the survey was applied 5-7 days later. Intraclass correlation coefficient was used to determine test-retest reliability, and Cronbach alpha was used to determine internal consistency. Criterion validity was evaluated using the Nottingham Health Profile. Exploratory factor analysis was used to examine the factor structure of the Turkish version of the OPUS satisfaction module. Results: The test-retest correlation (intraclass correlation coefficient 5 0.92 for CSD and 0.91 for CSS) and internal consistency (Cronbach's alpha 5 0.84 for CSD and 0.95 for CSS) were high. A statistically significant correlation was found between the OPUS CSD and CSS modules and the Nottingham Health Profile (r 5 20.325 for CSD module, r 5 20.381 for CSS module, P , 0.001). The factor analysis revealed one-factor structure for both modules.Conclusions: This study demonstrated the reliability and validity of the Turkish version of the OPUS satisfaction module, and it provides a useful starting point for future studies on this survey.

A systematic review on cross-cultural validations and psychometric solidity of the orthotics and prosthetics user survey

“…The Turkish version, whose reliability data (0.92–0.91) and Cronbach's alpha (0.95–0.84) initially reflected clarity, good understanding, and cultural applicability for clinical care use to improve user care, as well as an acceptable sample size (according to the author's criteria) 25 (Tables 1 and 3).…”

“…It features 5 assessment modules, which can be recorded individually or completely, consisting of lower-extremity functionality, upper extremity, client satisfaction with the device, satisfaction with clinical/care services, and health-related quality of life. 11-13,18-26…”

“…1-4,6,7,11,12 The expectations of users and professionals in P&O have increased (research, evaluation, and technology) and with it, the need to promote the use and dissemination of useful, psychometrically adequate evaluation instruments. 1-8,10-25…”

“…Having obtained a questionnaire that collects and assesses several affected areas such as functional status, quality of life, and satisfaction with devices and services, 12 its psychometric properties must be properly assessed. 11-13,17-19,21-27…”

“…12,22 Current studies, such as the Italian validation, reflect it as “the only measure designed with the explicit purpose of assessing patient satisfaction in the P&O field.” 11 In view of the good psychometric results initially obtained in the countries in which it has been validated, the study aims to reflect its data. 11-13,18-26…”