Musculoskeletal Research Centre and School of Physiotherapy, La Trobe University, Bundoora, Victoria, Australia.
J Rehabil Med. 2010 Nov;42(10):956-61. doi: 10.2340/16501977-0626.
To investigate the clinimetric properties of the de Morton Mobility Index (DEMMI) in a Geriatric Evaluation and Management (GEM) population.
A longitudinal validation study (n = 100) and inter-rater reliability study (n = 29) in a GEM population.
Consecutive patients admitted to a GEM rehabilitation ward were eligible for inclusion.
At hospital admission and discharge, a physical therapist assessed patients with physical performance instruments that included the 6-metre walk test, step test, Clinical Test of Sensory Organization and Balance, Timed Up and Go test, 6-minute walk test and the DEMMI. Consecutively eligible patients were included in an inter-rater reliability study between physical therapists.
DEMMI admission scores were normally distributed (mean 30.2, standard deviation 16.7) and other activity limitation instruments had either a floor or a ceiling effect. Evidence of convergent, discriminant and known groups validity for the DEMMI were obtained. The minimal detectable change with 90% confidence was 10.5 (95% confidence interval 6.1-17.9) points and the minimally clinically important difference was 8.4 points on the 100-point interval DEMMI scale.
The DEMMI provides clinicians with an accurate and valid method of measuring mobility for geriatric patients in the subacute hospital setting.
研究老年评估与管理（GEM）人群中德莫顿活动指数（DEMMI）的临床计量学特性。
GEM 人群中的纵向验证研究（n = 100）和观察者间可靠性研究（n = 29）。
符合条件的连续患者被纳入 GEM 康复病房。
在住院和出院时，物理治疗师使用包括 6 米步行测试、台阶测试、感觉组织和平衡临床测试、起身行走测试、6 分钟步行测试和 DEMMI 在内的身体表现仪器评估患者。连续符合条件的患者被纳入物理治疗师之间的观察者间可靠性研究。
DEMMI 入院分数呈正态分布（均值 30.2，标准差 16.7），其他活动受限仪器存在地板或天花板效应。获得了 DEMMI 的收敛、判别和已知组有效性的证据。在 90%置信区间内，最小可检测变化为 10.5（95%置信区间 6.1-17.9）点，在 100 点区间 DEMMI 量表上，最小临床重要差异为 8.4 点。
DEMMI 为临床医生提供了一种在亚急性医院环境中测量老年患者活动能力的准确有效的方法。
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