Determining meaningful changes in gait speed after hip fracture
Determining meaningful changes in gait speed after hip fracture
复制标题
DOI：
10.1093/ptj/86.6.809
复制
发表时间：
2006-06-01
期刊：
影响因子：
3.2
通讯作者：
Tomlinson, James D.
中科院分区：
文献类型：
--
作者：
Palombaro, Kerstin M.;Craik, Rebecca L.;Tomlinson, James D.
背景和目的。髋部骨折后的老年受试者比同龄人走得更慢。由于尚未报告步态速度的测量标准误差（SEM）、变化敏感性和临床重要变化，因此难以定义他们行走更慢的程度。本研究的目的是量化老年受试者髋部骨折后习惯性和快速步态速度的SEM，以定义最小可检测变化（MDC），并估计习惯性步态速度的最小临床重要差异（MCID）。科目从3项收集步态速度数据的研究中抽取了92例髋部骨折后受试者的样本。方法.通过使用SEM确定MDC的估计值。MCID根据专家意见和受试者工作特征（ROC）曲线确定。结果在习惯速度和快速速度下，SEM和MDC分别为0.08 m/s和0.10 m/s。MCID估计的两种方法都将0.10 m/s确定为习惯步态速度的有意义变化。讨论和结论。步态速度为0.10 m/s的估计MCID得到了临床专家意见和ROC曲线截止点的支持。
Background and Purpose. Older subjects after hip fracture walk more slowly than age-matched peers. The extent to which they walk more slowly is difficult to define because the standard error of the measure (SEM), sensitivity to change, and clinically important change have not been reported for gait speed. The purposes of this study were to quantify the SEM for habitual and fast gait speeds among older subjects after hip fracture, to define the minimal detectable change (MDC), and to estimate the minimal clinically important difference (MCID) for habitual gait speed. Subjects. A sample of 92 subjects after hip fracture was drawn from 3 studies that collected gait speed data. Methods. An estimate of the MDC was determined by use of the SEM.. The MCID was determined from expert opinion and from a receiver operating characteristic (ROC) curve. Results. The SEM and the MDC were 0.08 m/s and 0.10 m/s for habitual speed and fast speed, respectively. Both methods of MCID estimation identified 0.10 m/s as a meaningful change in habitual gait speed. Discussion and Conclusion. The estimated MCID for gait speed of 0.10 m/s was supported by clinical expert opinion and the cutoff point of the ROC curve.