功能性步态评价应用于帕金森病患者的信度分析

目的:验证功能性步态评价(FGA)在帕金森病(PD)患者中的组间信度、重测信度、内部一致性及分半信度,为临床提供评价工具.方法:121例住院帕金森病患者(平均年龄61.9岁)入选.两名评价者同时评定PD患者的FGA表现,进行组间信度分析.评价过程同时记录为视频资料,4周后其中一名评定者对视频资料进行二次评价,进行重测信度分析.内部一致性信度采用克朗巴赫α系数来评价.分半信度:将FGA各单项以奇数项、偶数项分为两半,计算其分半信度.结果:FGA总分的组间信度和重测信度均为0.99,各单项组间信度波动于0.49-0.98之间,重测信度波动于0.91-0.99之间.FGA内部一致性Cronbach α为0.94,分半信度为0.97.结论:FGA用于评价PD患者的平衡及步态障碍,其组间信度、重测信度、内部一致性及分半信度极佳.

Reliability of functional gait assessment in patients with Parkinson's disease

AbstractObjective: To investigate interrater and intrarater reliability, internal consistency and split-half reliability of the functional gait assessment (FGA) as a measure for balance abilities and gait during walking in Parkinson's disease (PD) patients. Method: One hundred and twenty-one inpatients with PD (mean age=61.9 years) participated in this study. Participants were evaluated by two raters on performance of FGA and the testing procedure was recorded with video. One of the raters assessed the performances of the same FGA testing via videotapes 4 weeks later. Result: The interrater and intrarater reliability of FGA total score were found to be almost perfect with an intraclass correlation coefficient (ICC) of 0.99. Interrater reliability of single items ranged from 0.49 to 0.98 and intrarater reliability 0.91 to 0.99. Internal consistency of FGA scores was 0.94, while split-half reliability 0.97. Conclusion: FGA has perfect inter- and intrarater reliability, internal consistency, and split-half reliability for evaluating balance and gait disorders in PD patients.