Sherman S E, Reuben D
Multicampus Program in Geriatric Medicine and Gerontology, UCLA School of Medicine, and the Department of Veterans Affairs Medical Center, Sepulveda, Calif 91343, USA.
J Gen Intern Med. 1998 Dec;13(12):817-23. doi: 10.1046/j.1525-1497.1998.00245.x.
To evaluate two performance-based measures of functional status and assess their correlation with self-report measures.
Cross-sectional study.
Of the 363 community-dwelling elders enrolled in a trial of comprehensive geriatric assessment who participated, all had at least one of four target conditions (urinary incontinence, depression, impaired functional status, or history of falling).
Two performance-based measures, National Institute on Aging (NIA) Battery, and Physical Performance Test (PPT), and three self-report functional status measures, basic and intermediate activities of daily living and the Short-Form-36 (SF-36) physical functioning subscale, were used. Measures of restricted activity days, patient satisfaction and perceived efficacy were also used.
All measures were internally consistent. There was a high correlation between the NIA and PPT (kappa = 0.71), while correlations between the performance-based and self-report measures ranged from 0.37 to 0.50. When patients with values above the median on the two performance-based measures were compared with those below, there were significant differences (p </=.0001) for age, number of medications, and the physical function, pain, general health, and physical role function SF-36 subscales.
Performance-based measures correlated highly with each other and moderately with questionnaire-based measures. Performance-based measures also had construct validity and did not suffer from floor or ceiling effects.
评估两种基于表现的功能状态测量方法，并评估它们与自我报告测量方法的相关性。
横断面研究。
在一项综合老年评估试验中登记的363名社区居住老年人参与了研究，他们都至少患有一种以下四种目标疾病（尿失禁、抑郁症、功能状态受损或跌倒史）。
使用了两种基于表现的测量方法，即美国国立衰老研究所（NIA）成套测试和身体表现测试（PPT），以及三种自我报告的功能状态测量方法，即基本和中级日常生活活动以及简短健康调查问卷（SF-36）身体功能分量表。还使用了活动受限天数、患者满意度和感知疗效的测量方法。
所有测量方法的内部一致性良好。NIA和PPT之间的相关性很高（kappa = 0.71），而基于表现的测量方法与自我报告测量方法之间的相关性在0.37至0.50之间。将在两种基于表现的测量方法中得分高于中位数的患者与得分低于中位数的患者进行比较时，在年龄、用药数量以及SF-36身体功能、疼痛、总体健康和身体角色功能分量表方面存在显著差异（p≤0.0001）。
基于表现的测量方法之间相关性很高，与基于问卷的测量方法之间相关性中等。基于表现的测量方法也具有结构效度，且不存在地板效应或天花板效应。
