Brown Cynthia J, Roth David L, Allman Richard M
Birmingham/Atlanta Department of Veterans Affairs Geriatric Research, Education, and Clinical Center, Birmingham,AL, USA.
J Rehabil Res Dev. 2008;45(4):551-8. doi: 10.1682/jrrd.2007.06.0086.
Accurate methods of measuring levels of mobility during hospitalization are lacking. We validated the use of wireless monitors to measure three levels of mobility during hospitalization: (1) lying, (2) sitting, and (3) standing or walking. Hospitalized medical patients 65 years or older who did not have delirium or dementia and could walk in the 2 weeks before admission were eligible. Wireless monitors, which recorded average position every 20 seconds, were attached to the thigh and ankle of consented patients. Direct behavioral observation by trained observers who recorded mobility level was used as the gold standard. Forty-seven male patients (mean age 73.9 years), with a mean length of stay of 5.3 days, generated 187 two-hour direct behavioral observation periods. Wireless monitors were highly correlated with direct behavioral observations. The median kappa was 0.92 and the kappa across all observations was 0.88, indicating excellent agreement. This study demonstrates that wireless monitors validly measure mobility levels among older hospitalized patients.
目前缺乏准确测量住院期间活动水平的方法。我们验证了使用无线监测器来测量住院期间的三种活动水平：（1）躺卧，（2）坐立，以及（3）站立或行走。年龄在65岁及以上、无谵妄或痴呆且入院前两周能够行走的住院内科患者符合条件。无线监测器每20秒记录一次平均位置，将其附着在同意参与的患者的大腿和脚踝上。由经过培训的观察员进行的直接行为观察记录活动水平，被用作金标准。47名男性患者（平均年龄73.9岁），平均住院时长为5.3天，产生了187个两小时的直接行为观察时段。无线监测器与直接行为观察高度相关。中位数kappa为0.92，所有观察结果的kappa为0.88，表明一致性极佳。本研究表明，无线监测器能够有效测量老年住院患者的活动水平。
