Botolfsen Pernille, Helbostad Jorunn L, Moe-Nilssen Rolf, Wall James C
Faculty of Health Sciences, Oslo University College, Pilestredet 44, N-0167 Oslo, Norway.
Physiother Res Int. 2008 Jun;13(2):94-106. doi: 10.1002/pri.394.
'Expanded Timed Up-and-Go' (ETUG) was developed to assess each of the subtasks of the 'Timed Up-and-Go' (TUG). The aim of the study was to test the intrarater, interrater, test-retest reliability and internal consistency of the ETUG, and the concurrent validity with the TUG.
The present study is a reliability and a validity study. Twenty-eight subjects (80 +/- 4.1 years) with balance and gait problems were included. Three raters timed the ETUG subtasks from a video, using a computer-based scoring programme, and the total ETUG time was calculated. TUG was registered by a regular stopwatch.
The intrarater and interrater reliability (intraclass correlation [ICC][1,1]) ranged from 0.55 to 0.97. The test-retest reliability (ICC[1,1]) ranged from 0.54 to 0.85. The absolute measurement error of the total time (1.96 S(w)) was 2.8 seconds. The internal consistency (Cronbach's alpha) was 0.74. The correlation (Pearson's r) between ETUG total time and TUG after correcting for attenuation caused by restricted reliability in each of the measures was 0.85.
The ETUG scored from a video shows a good reliability for experienced raters and acceptable internal consistency. The ETUG showed a higher reliability than TUG when tested on the same sample of older subjects with impaired mobility, and the high concurrent validity between ETUG and TUG suggests that the two tests may have similar properties. Since ETUG also adds new information compared with TUG, we suggest that ETUG is an interesting alternative to existing clinical tests of mobility.
“扩展计时起立行走测试”（ETUG）旨在评估“计时起立行走测试”（TUG）的各个子任务。本研究的目的是测试ETUG的评分者内信度、评分者间信度、重测信度和内部一致性，以及与TUG的同时效度。
本研究为信效度研究。纳入28名存在平衡和步态问题的受试者（80±4.1岁）。三名评分者通过基于计算机的评分程序，根据视频对ETUG子任务进行计时，并计算ETUG总时长。TUG则使用常规秒表记录。
评分者内信度和评分者间信度（组内相关系数[ICC][1,1]）范围为0.55至0.97。重测信度（ICC[1,1]）范围为0.54至0.85。总时长的绝对测量误差（1.96S(w)）为2.8秒。内部一致性（Cronbach'sα）为0.74。在对每项测量中因信度受限导致的衰减进行校正后，ETUG总时长与TUG之间的相关性（Pearson'sr）为0.85。
从视频中评分的ETUG对有经验的评分者显示出良好的信度和可接受的内部一致性。在对同一组行动能力受损的老年受试者样本进行测试时，ETUG显示出比TUG更高的信度，并且ETUG与TUG之间的高同时效度表明这两项测试可能具有相似的特性。由于与TUG相比，ETUG还增加了新信息，我们建议ETUG是现有行动能力临床测试的一个有趣替代方案。
