Department of Physical Therapy, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA, USA.
J Otolaryngol Head Neck Surg. 2024 Jan-Dec;53:19160216241250353. doi: 10.1177/19160216241250353.
Vestibular Activities and Participation Measure (VAP) subscales assess the effect of vestibular disorders on activity and participation. This study aimed to perform the cross-cultural adaptation and assess the validity, internal consistency, reliability, and measurement error of the Brazilian version of VAP subscales.
The cross-cultural adaptation followed the translation, synthesis, back-translation, review by a committee of experts, and pretesting phases. Structural validity was assessed using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), while Spearman's correlation between VAP subscales and the Dizziness Handicap Inventory (DHI) was used to assess construct validity. Cronbach's alpha measured internal consistency. Intraclass correlation coefficient (ICC) assessed intra- and inter-rater reliability, and measurement error was calculated by using the standard error of measurement (SEM) and minimal detectable change (MDC).
Additional information was included in the Brazilian version of the Vestibular Activities and Participation measure (VAP-BR) after approval by one of the developers of the instrument to improve the understanding among individuals. One factor was found in the EFA for each subscale with 50% explained variance. Regarding CFA, the subscales 1 (S1) and 2 (S2) presented, respectively, adequate model fit indices (ie, comparative fit index of 0.99 and 0.97, and standardized root mean square residual of 0.04 for both subscales), but a very low factor load in item 6 of S1 (0.08). Chronbach's alpha was 0.80 (S1) and 0.82 (S2). For intra-rater assessment, the S1 and S2 presented an ICC of 0.87 and 0.90, SEM of 0.01 and 1.16, and MDC of 0.39 and 0.46, respectively. When assessed by 2 different raters, SEM values were 1.03 and 1.53, and MDC values were 2.85 and 4.23 for S1 and S2, respectively; both subscales showed an ICC of 0.92. Correlations between DHI and VAP subscales presented coefficients above 0.57.
The Brazilian version of VAP subscales presents good measurement properties and may assist health professionals in identifying activity limitations and participation restrictions in individuals with vestibular disorders.
前庭活动和参与量表（VAP）子量表评估前庭障碍对活动和参与的影响。本研究旨在对巴西版 VAP 子量表进行跨文化适应性改编，并评估其效度、内部一致性、信度和测量误差。
跨文化适应遵循翻译、综合、回译、专家委员会审查和预测试阶段。使用探索性因子分析（EFA）和验证性因子分析（CFA）评估结构效度，而 VAP 子量表与眩晕障碍问卷（DHI）之间的 Spearman 相关用于评估结构效度。克朗巴赫α测量内部一致性。内-评分者信度用组内相关系数（ICC）评估，测量误差用测量标准误差（SEM）和最小可检测变化（MDC）计算。
在仪器的一位开发者批准后，巴西版前庭活动和参与量表（VAP-BR）中添加了额外的信息，以提高个人的理解。EFA 发现每个子量表都有一个因素，解释方差为 50%。关于 CFA，子量表 1（S1）和 2（S2）分别具有适当的模型拟合指数（即，S1 和 S2 的比较拟合指数分别为 0.99 和 0.97，标准化均方根残差分别为 0.04），但 S1 项目 6 的因子负荷非常低（0.08）。克朗巴赫α分别为 0.80（S1）和 0.82（S2）。对于内评分者评估，S1 和 S2 的 ICC 分别为 0.87 和 0.90，SEM 分别为 0.01 和 1.16，MDC 分别为 0.39 和 0.46。当由 2 位不同的评分者评估时，S1 和 S2 的 SEM 值分别为 1.03 和 1.53，MDC 值分别为 2.85 和 4.23，两个子量表的 ICC 均为 0.92。DHI 与 VAP 子量表之间的相关性呈系数大于 0.57。
巴西版 VAP 子量表具有良好的测量特性，可帮助卫生专业人员识别前庭障碍患者的活动受限和参与受限。
