前庭症状严重程度量表的开发与心理测量学验证

文献信息

中文摘要

目的： 开发前庭症状严重程度自我感知量表（EGV），并评估由其得分所得解释的效度和信度。
方法： 这项方法学验证研究纳入了100名有前庭症状的成人。工具开发包括探索性文献综述、通过德尔菲专家组进行条目构建，以及由专家评审进行内容效度验证。分别对频率和强度两个分量表采用探索性和验证性因子分析检验结构效度。使用Cronbach's alpha评估内部一致性。采用组内相关系数（ICC）分析重测信度（7天和14天间隔）。通过测量标准误和最小可检测变化估计测量误差。通过假设检验评估结构效度，检验EGV得分与测量功能影响、身体活动、自主性和注意觉察的已验证工具之间的关联。
结果： 所有条目均显示出令人满意的内容效度（系数≥0.80）。探索性因子分析支持两个分量表均为单维结构（KMO>0.94；Bartlett检验p<0.001），因子载荷范围为0.84至0.95。验证性因子分析显示模型拟合可接受。内部一致性极好（α>0.90）。重测信度在14天时显示出高稳定性（ICC≥0.80）。较高的EGV得分与更大的功能受限、较低的身体活动水平、增加的依赖性和降低的注意觉察显著相关。
结论： EGV显示出支持结构效度、信度和结构效度的证据，支持其用于测量前庭症状严重程度的临床适用性。该量表为临床实践和研究中监测症状进展提供了标准化框架。

英文摘要

OBJECTIVE: To develop the Self-Perception of Vestibular Symptom Severity Scale (EGV) and to evaluate the validity and reliability of the interpretations derived from its scores.
METHODS: This methodological validation study included 100 adults with vestibular symptoms. Instrument development involved an exploratory literature review, item construction through a Delphi panel, and content validation by expert judges. Structural validity was examined separately for the frequency and intensity subscales using exploratory and confirmatory factor analyses. Internal consistency was assessed using Cronbach's alpha. Test-retest reliability (7- and 14-day intervals) was analyzed using the Intraclass Correlation Coefficient (ICC). Measurement error was estimated through the standard error of measurement and smallest detectable change. Construct validity was evaluated through hypothesis testing by examining associations between EGV scores and validated instruments measuring functional impact, physical activity, autonomy, and attentional awareness.
RESULTS: All items demonstrated satisfactory content validity (coefficients ≥0.80). Exploratory factor analysis supported a unidimensional structure in both subscales (KMO > 0.94; Bartlett's test p < 0.001), with factor loadings ranging from 0.84 to 0.95. Confirmatory factor analysis indicated adequate model fit. Internal consistency was excellent (α > 0.90). Test-retest reliability showed high stability at 14-days (ICC ≥ 0.80). Higher EGV scores were significantly associated with greater functional limitation, lower physical activity levels, increased dependence, and reduced attentional awareness.
CONCLUSION: The EGV demonstrated evidence supporting structural validity, reliability, and construct validity, supporting its clinical applicability for measuring vestibular symptom severity. The scale provides a standardized framework for monitoring symptom progression in clinical practice and research.