Are performance-based measures sufficiently reliable for use in multicenter trials?
Are performance-based measures sufficiently reliable for use in multicenter trials?
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DOI：
10.1093/gerona/54.1.m3
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发表时间：
1999-01-01
影响因子：
5.1
通讯作者：
Bach, MA
中科院分区：
文献类型：
--
作者：
Jette, AM;Jette, DU;Bach, MA
背景文献包含很少的报告重测信度的性能为基础的措施。本研究的目的是确定电池的七个定时，性能为基础的措施，用于评估功能限制的虚弱，老年人的重测信度。105名体弱的老年受试者接受了两次间隔约2周的定时测试：8英尺步行、起床行走测试、爬楼梯、单次重复从椅子上站立以及单次重复上肢10磅举重。评估两个管理部门完成每项任务的平均记录时间之间的一致性。组内相关系数范围从单椅站立的0.25到8英尺步行的0.79。只有单次10磅的电梯所需的时间是显着更大的第一次管理相比，第二次。时间绩效测量具有广泛的重测信度。基于性能的协议，反映熟悉的任务与离散的起点和终点可能会达到更高的可靠性比任务，是不熟悉的主题，或可能有模糊的元素。
Background. The literature contains few reports of the test-retest reliability of performance-based measures. The purpose of this study was to determine the test-retest reliability of a battery of seven timed, performance-based measures used to assess the functional limitations of frail, older adults.Methods. One hundred and five frail, elderly subjects were twice administered a battery of timed tests approximately 2 weeks apart: 8-foot walk, get-up-and-go test, stair climb, single and repetitive standing from a chair, and single and repetitive 10-pound lifts with the upper limbs. Agreement between the mean times recorded for accomplishing each task at the two administrations was assessed.Results. Intraclass correlation coefficients ranged from .25 for the single chair stand to .79 for the 8-foot walk. Only the time taken for the single 10-pound lift was significantly greater at the first administration as compared with the second.Conclusions. Timed performance-based measures have a wide range of test-retest reliability. Performance-based protocols that reflect familiar tasks with discrete starting and ending points may achieve higher reliability than tasks that are unfamiliar to subjects or may have ambiguous elements in them.