Mohamadi Somayeh, Ebrahimi Ismail, Dadgoo Mehdi, Salavati Mahyar, Saeedi Ahmad, Valiollahi Bijan
Department of Physiotherapy, Iran University of Medical Sciences, Tehran, Iran.
Department of Physiotherapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Med J Islam Repub Iran. 2018 Sep 1;32:79. doi: 10.14196/mjiri.32.79. eCollection 2018.
Ankle Instability Instrument (AII) is a questionnaire for determination of ankle stability status. The aim of this study is to cross-culturally translate and investigate the reliability and validity of AII in a sample of Persian-speaking Iranians, suffering from ankle sprain. One hundred twenty persons with a history of ankle sprain were recruited in the study. All participants completed the Persian version of Ankle Instability Instrument, Cumberland Ankle Instability Tool (CAIT), Foot and Ankle Ability Measure (FAAM) and Foot and Ankle Outcome Score (FAOS) at the baseline. Out of them, 60 randomly selected subjects completed the questionnaires once more, one week later. Face validity, Test-retest reliability, internal consistency, standard error of measurement, minimal metric detectable change, spearman's correlation coefficient and confirmatory factor analysis of AII measured. We used Lisrel v 8.80 software with significant level of p<0.05. Persian version of AII is clear and unambiguous and its qualitative face validity was confirmed in the pilot study on the 20 subjects with a lateral ankle sprain. The interclass correlation coefficient, Cronbach's alpha, standard error of measurement and minimal metric detectable change were 0.93, 0.87, 0.81 and 2.25 (95% confidence interval, 0.85-0.96). The Spearman correlations coefficients between AII, and CAIT, FAAM and FAOS measures were 0.91, 0.71 and 0.69 respectively. The original three factor structure of AII was replicated based on the confirmatory factor analysis. Which showed an adequate fit of the model to the data and goodness-of-various fit indices. The Ankle Instability Instrument Persian Version (AII-PV) is a reliable and valid measure for assessing the ankle stability status.
踝关节不稳定量表（AII）是一种用于确定踝关节稳定状态的问卷。本研究的目的是对AII进行跨文化翻译，并在患有踝关节扭伤的波斯语伊朗人群样本中调查其信度和效度。本研究招募了120名有踝关节扭伤病史的人。所有参与者在基线时完成了波斯语版的踝关节不稳定量表、坎伯兰踝关节不稳定工具（CAIT）、足踝能力测量（FAAM）和足踝结局评分（FAOS）。其中，60名随机选择的受试者在一周后再次完成问卷。对AII进行了表面效度、重测信度、内部一致性、测量标准误差、最小可检测变化、斯皮尔曼相关系数和验证性因素分析。我们使用Lisrel v 8.80软件，显著性水平为p<0.05。AII的波斯语版本清晰明确，其定性表面效度在对20名外侧踝关节扭伤受试者的预试验中得到证实。组内相关系数、克朗巴赫α系数、测量标准误差和最小可检测变化分别为0.93、0.87、0.81和2.25（95%置信区间，0.85-0.96）。AII与CAIT、FAAM和FAOS测量之间的斯皮尔曼相关系数分别为0.91、0.71和0.69。基于验证性因素分析，复制了AII最初的三因素结构。这表明模型与数据具有良好的拟合度和各种拟合指数的优度。波斯语版踝关节不稳定量表（AII-PV）是评估踝关节稳定状态的一种可靠且有效的测量工具。
