Psychometric Properties of Activity, Self-Efficacy, and Quality-of-Life Measures in Individuals with Parkinson Disease
Psychometric Properties of Activity, Self-Efficacy, and Quality-of-Life Measures in Individuals with Parkinson Disease
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DOI：
10.3138/ptc.2009-08
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发表时间：
2011-12-01
影响因子：
1
通讯作者：
Metcalfe, Amy
中科院分区：
文献类型：
--
作者：
Dal Bello-Haas, Vanina;Klassen, Laura;Metcalfe, Amy
目的：研究帕金森病（PD）患者6项结局指标的心理测量学特性。方法：24名参与者在2周内完成了以下两次：定时起立-行走测试（TUG）、西北大学残疾量表（NUDS）、Schwab & England ADL量表（S&E）、活动特异性平衡信心（ABC）量表、PD量表简表（PDQ 8）、和斯坦福大学慢性病管理自我效能6项量表（SSE）。计算内部一致性、重测信度（ICC[3，1]）和最小可检测变化（MDC）评分。结果：NUDS、ABC、PDQ-8和SSE的Cronbach’s α得分分别为0.47、0.92、0.72和0.91。TUG的类内相关系数（ICC[3，1]）为0.69，可以通过平均两次试验来提高。NUDS、S&E、ABC、PDQ-8和SSE的ICC分别为0.56、0.70、0.79、0.82和0.72。ABC与TUG（r =-0.44，p = 0.03）、PDQ-8（r（s）= 0.51，p = 0.01）和NUDS（r（s）= 0.48，p = 0.02）步行项目相关。ABC能够区分疾病进展的第1和第3阶段，但不能区分第1和第2阶段，这表明ABC可以区分疾病进展中的大差异，但不能检测到更细微的差异。结论：ABC，PDQ-8和SSE的同质性是好到优秀。重测信度得分的所有措施，除了NUDS是中等至良好。ABC是用于PD的有效措施。MDC统计量可能有助于解释组评分变化。
Purpose: To examine the psychometric properties of six outcome measures in people with Parkinson disease (PD).Method: Twenty-four participants completed the following twice within 2 weeks: the timed up-and-go test (TUG), Northwestern University Disability Scale (NUDS), Schwab & England ADL Scale (S&E), Activities-specific Balance Confidence (ABC) Scale, PD Questionnaire-Short Form (PDQ 8), and Stanford Self-Efficacy for Managing Chronic Disease 6-Item Scale (SSE). Internal consistency, test-retest reliability (ICC[3,1]), and minimal detectable change (MDC) scores were calculated. Convergent and discriminant validity of the ABC were examined.Results: Cronbach's alpha scores for the NUDS, ABC, PDQ-8, and SSE were 0.47, 0.92, 0.72, and 0.91 respectively. The intra-class correlation coefficient (ICC[3,1]) for the TUG was 0.69 and could be improved by averaging two trials. ICCs for the NUDS, S&E, ABC, PDQ-8, and SSE were 0.56, 0.70, 0.79, 0.82, and 0.72 respectively. The ABC correlated with the TUG (r = -0.44, p = 0.03) and with PDQ-8 (r(s) = 0.51, p = 0.01) and NUDS (r(s) = 0.48, p = 0.02) walking items. The ABC was able to discriminate between stages 1 and 3 of disease progression but not between stages 1 and 2, which suggests that the ABC can distinguish large differences in disease progression but cannot detect more subtle differences.Conclusions: Homogeneity of the ABC, PDQ-8, and SSE is good to excellent. Test retest reliability scores of all measures except the NUDS are moderate to good. The ABC is a valid measure for use in PD. The MDC statistic may be useful for interpreting group score changes.