Background

The Animated Activity Questionnaire (AAQ) was developed in the Netherlands to assess activity limitations in individuals with hip/knee osteoarthritis (HKOA). The AAQ is easy to implement and minimizes the disadvantages of questionnaires and performance-based tests by closely mimicking real-life situations. The AAQ has already been cross-culturally validated in six other countries.

Objective

To assess the cross-cultural validity, the construct validity, the reliability of the AAQ in a Brazilian sample of individuals with HKOA, and the influence of formal education on the construct validity of the AAQ.

Methods

The Brazilian sample (N = 200), mean age 64.4 years, completed the AAQ and the Western Ontario and McMaster Universities Index (WOMAC). A subgroup of participants performed physical function tests and completed the AAQ twice with a one-week interval. The Dutch sample (N = 279) was included to examine Differential Item Functioning (DIF) between the scores obtained in the Netherlands and Brazil. For this purpose, ordinal regression analyses were used to evaluate whether individuals with the same level of activity limitations from the two countries (the Dutch as the reference group) scored similarly in each AAQ item. To evaluate the construct validity, correlation coefficients were calculated between the AAQ, the WOMAC domains, and the performance-based tests. To evaluate reliability, the Cronbach's alpha coefficient, the intraclass correlation coefficient, and the standard error of measurement (SEM) were calculated.

Results

The AAQ showed significant correlations with all the WOMAC domains and performance-based tests (rho=0.46–0.77). The AAQ showed high internal consistency (Cronbach's alpha=0.94), excellent test-retest reliability (ICC_2,1 = 0.98), and small SEM (2.25). Comparing to the scores from the Netherlands, the AAQ showed DIF in two items, however, they did not impact on the total AAQ score (rho=0.99).

Conclusion

Overall, the AAQ showed adequate cross-cultural validity, construct validity, and reliability, which enables its use in Brazil and international/multicenter studies.

中文翻译：

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髋关节和膝关节骨关节炎患者动画活动问卷的跨文化有效性：荷兰和巴西之间的比较

背景

动画活动问卷 (AAQ) 是在荷兰开发的，用于评估髋/膝骨关节炎 (HKOA) 患者的活动限制。AAQ 易于实施，并通过密切模仿现实生活情况，最大限度地减少了问卷调查和基于绩效的测试的缺点。AAQ 已经在其他六个国家进行了跨文化验证。

客观的

评估跨文化效度、结构效度、AAQ 在巴西 HKOA 个体样本中的信度，以及正规教育对 AAQ 结构效度的影响。

方法

巴西样本 ( N  = 200)，平均年龄 64.4 岁，完成了 AAQ 以及西安大略和麦克马斯特大学指数 (WOMAC)。一组参与者进行了身体功能测试，并以一周的间隔完成了两次 AAQ。荷兰样本（N = 279) 被包括在内以检查在荷兰和巴西获得的分数之间的差异项目功能 (DIF)。为此，使用序数回归分析来评估两个国家（荷兰作为参考组）具有相同活动限制水平的个人在每个 AAQ 项目中的得分是否相似。为了评估结构的有效性，计算了 AAQ、WOMAC 域和基于性能的测试之间的相关系数。为了评估可靠性，计算了 Cronbach's α 系数、组内相关系数和测量标准误差 (SEM)。

结果

AAQ 与所有 WOMAC 域和基于性能的测试显示出显着相关性 ( rho =0.46-0.77)。AAQ 显示出较高的内部一致性（Cronbach's alpha=0.94）、出色的重测信度（ICC _2,1  = 0.98）和较小的 SEM（2.25）。与荷兰的分数相比，AAQ 有两个项目显示 DIF，但它们对 AAQ 总分没有影响（rho =0.99）。

结论

总体而言，AAQ 显示出足够的跨文化有效性、结构有效性和可靠性，使其能够用于巴西和国际/多中心研究。