Development and validation of a new short and simple measure of physical function for juvenile idiopathic arthritis
Development and validation of a new short and simple measure of physical function for juvenile idiopathic arthritis
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DOI：
10.1002/art.22900
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发表时间：
2007-08-15
期刊：
影响因子：
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通讯作者：
Ravelli, Angelo
中科院分区：
文献类型：
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作者：
Filocamo, Giovanni;Sztainbok, Flavio;Ravelli, Angelo
目标。建立并验证幼年特发性关节炎(JIA)儿童的一种新的短而简单的身体功能测量方法。青少年关节炎功能量表(JAFS)是一个包含15个项目的问卷，调查身体3个部位(下肢、手/腕和上肢)的身体功能。意大利版仪器的验证是通过评估连续211名年龄在2.2-18岁的JIA患者来完成的。对量表的可行性、表面效度和内容效度、结构和区分度、内部一致性、评定者间信度和对临床变化的反应性进行了检验。将JAFS的心理测量特性与儿童健康评估问卷(C-HAQ)的测量结果进行比较。JAFS被发现是可行的，并具有表面效度和内容效度。JAFS评分与JIA预测范围内的大多数其他结果指标相关，从而显示出良好的结构效度，并在不同程度的残疾之间有很好的区分。内部一致性(Cronbach‘sα)为0.82。评分者(母亲、父亲和孩子)之间以及报告和观察的功能水平之间的组内相关系数在0.65到0.84之间。JAFS显示出较好的反应能力，标准化反应平均值在0.42到0.56之间。与C-HAQ的比较表明，JAFS在结构效度和信度上优于C-HAQ，在区分效度和反应度上至少与C-HAQ相当。JAFS量表具有较好的信度、结构效度、区分能力和较好的反应度，是评价JIA儿童身体功能的有效工具。
Objective. To develop and validate a new short and simple measure of physical function in children with juvenile idiopathic arthritis (JIA).Methods. The juvenile Arthritis Functionality Scale (JAFS) is a 15-item questionnaire that explores physical function in 3 body areas (lower limbs, hand/wrist, and upper segment). Validation of the Italian version of the instrument was accomplished by evaluating 211 consecutive JIA patients ages 2.2-18 years. The instrument's feasibility, face and content validity, construct and discriminative ability, internal consistency, interrater reliability, and responsiveness to clinical change were examined. JAFS psychometric properties were compared with those of the Childhood Health Assessment Questionnaire (C-HAQ).Results. The JAFS was found to be feasible and to possess both face and content validity. The JAFS score correlated with most of the other JIA outcome measures in the range predicted, thereby demonstrating good construct validity, and discriminated well among different levels of disability. The internal consistency (Cronbach's alpha) was 0.82. The intraclass correlation coefficients between raters (mothers, fathers, and children) and between reported and observed level of function ranged from 0.65 to 0.84. The JAFS revealed fair responsiveness, with a standardized response mean ranging from 0.42 to 0.56. Comparison with the C-HAQ indicated that the JAFS may be superior in terms of construct validity and reliability, and at least as good in terms of discriminant validity and responsiveness.Conclusion. The JAFS exhibited good reliability, construct validity, and discriminative ability and fair responsiveness, and is therefore a valid instrument for the assessment of physical function in children with JIA.