Department of Orthopedics, The General Hospital of Western Theater Command, Tianhui Road 270, Chengdu, 610000, People's Republic of China.
Department of Rheumatism and Immunology, The General Hospital of Western Theater Command, Tianhui Road 270, Chengdu, 610000, People's Republic of China.
BMC Musculoskelet Disord. 2020 May 25;21(1):325. doi: 10.1186/s12891-020-03314-1.
The aims of this study were to adapt the Identification of Functional Ankle Instability (IdFAI) questionnaire into a simplified Chinese version and to assess its reliability, validity, and responsiveness in Chinese-speaking patients with chronic ankle instability (CAI) disorders.
The simplified Chinese version of the IdFAI (SC-IdFAI) questionnaire was developed with a five-step procedure involving cross-cultural translation and adaptation. Three questionnaires, including the SC-IdFAI, Medical Outcomes Study Short-Form 36 (SF-36), and Foot and Ankle Ability Measure (FAAM), were administered to the recruited patients. Then, the Cronbach's alpha value, intraclass correlation coefficient (ICC), standard error of measurement (SEM), minimal detectable change (MDC), Spearman's correlation coefficient (r), effect size (ES), and standardized response mean (SRM) were calculated to evaluate the reliability, validity, and responsiveness of the SC-IdFAI questionnaire.
A total of 131, 119, and 86 patients with CAI successfully completed the first, second, and third rounds of the questionnaires, respectively. Good or excellent internal consistency and test-retest reliability were found for the overall scale and subscales of the SC-IdFAI questionnaire. The values for the SEM (1.346) and MDC (3.73) were low, indicating that small clinical changes can be detected by the SC-IdFAI questionnaire. The correlations of the SC-IdFAI with FAAM and SF-36 were generally in agreement with the a priori hypotheses (85%, 34/40), suggesting the SC-IdFAI questionnaire has good construct validity. Moreover, the results suggest that the SC-IdFAI (ES = 1.123 and SRM = 1.554) has an acceptable level of responsiveness.
The SC-IdFAI scale may be an effective tool, and it is responsive, reliable and valid for the assessment of Chinese patients suffering from CAI.
本研究旨在将 Identification of Functional Ankle Instability（IdFAI）问卷改编为简体中文版，并评估其在患有慢性踝关节不稳定（CAI）疾病的中文患者中的可靠性、有效性和反应性。
简体中文版的 IdFAI（SC-IdFAI）问卷采用跨文化翻译和改编的五步骤程序开发。向招募的患者发放了 SC-IdFAI、Medical Outcomes Study Short-Form 36（SF-36）和 Foot and Ankle Ability Measure（FAAM）三个问卷。然后，计算 Cronbach's alpha 值、组内相关系数（ICC）、标准测量误差（SEM）、最小可检测变化（MDC）、Spearman 相关系数（r）、效应量（ES）和标准化反应均值（SRM），以评估 SC-IdFAI 问卷的可靠性、有效性和反应性。
共有 131、119 和 86 例 CAI 患者成功完成了第一轮、第二轮和第三轮问卷。SC-IdFAI 问卷的总体量表和分量表均具有良好或优秀的内部一致性和重测信度。SEM（1.346）和 MDC（3.73）值较低，表明 SC-IdFAI 问卷可检测到较小的临床变化。SC-IdFAI 与 FAAM 和 SF-36 的相关性与先验假设基本一致（85%，34/40），表明 SC-IdFAI 问卷具有良好的结构效度。此外，结果表明 SC-IdFAI（ES=1.123，SRM=1.554）具有可接受的反应性水平。
SC-IdFAI 量表可能是一种有效的工具，可用于评估患有 CAI 的中国患者，且具有良好的反应性、可靠性和有效性。
