Graduate Program in Physical Therapy, University of California-San Francisco/San Francisco State University, 1600 Holloway Ave., San Francisco, CA 94132, USA.
Phys Ther. 2011 Dec;91(12):1789-803. doi: 10.2522/ptj.20100393. Epub 2011 Oct 14.
If disability is the gap between what an individual can do and what that individual would like to be able to do, then measures that assess only current ability fall short of describing the impact of disability on the individual.
The aim of this study was to examine a potential measure of disability, the gap between current movement ability and preferred movement ability, as recorded with the Movement Ability Measure (MAM). This investigation was performed by establishing the relationship between self-perceived current ability and other measures and examining the evidence of convergence or divergence between the gap and other measures.
This investigation was a descriptive study.
Thirty people who had multiple sclerosis and were ambulatory completed the MAM and 18 other measures of bodily function, activity, and participation. Item response theory methods were used to generate logit estimates of average current movement ability and separate abilities in the 6 dimensions of movement on the MAM. Pearson correlations were calculated between estimated abilities from the MAM and scores from measures expected to be associated with these estimated abilities, as well as between the MAM and additional measures in exploratory analyses of relationships.
The average current ability and the separate dimensions correlated moderately to strongly (.5-.8) with many of the measures expected to be related and showed additional moderately strong correlations in exploratory analyses. The average gap between current ability and preferred ability correlated moderately with pain (-.56) and a scale of current ability (.46) but diverged from many of the measures.
The limitations of this study included the lack of an intervention to assess the response of the gap to therapy and the use of multiple statistical tests with a small sample.
The evidence supports the convergent validity for current ability on the MAM but mostly the divergence of the gap. Additional research should compare the gap specifically with measures that assess patients' preferences when determining disability.
如果残疾是个体能够做的事情和个体希望能够做的事情之间的差距，那么仅评估当前能力的措施无法全面描述残疾对个体的影响。
本研究旨在检验一种潜在的残疾衡量标准，即当前运动能力与理想运动能力之间的差距，这一差距通过运动能力测量表（MAM）记录得出。本研究通过确定个体自我感知的当前能力与其他测量指标之间的关系，并考察差距与其他测量指标之间的一致性或离散性，来进行此项研究。
本研究为描述性研究。
30 名患有多发性硬化症且可走动的患者完成了 MAM 及其他 18 项身体功能、活动和参与度的测量指标。使用项目反应理论方法生成 MAM 中平均当前运动能力以及 6 个运动维度的分项能力的对数估计值。对 MAM 中的估计能力与预期与这些估计能力相关的测量指标的得分进行 Pearson 相关分析，并对 MAM 与探索性分析中其他关系的测量指标进行分析。
平均当前能力和分项维度与许多预期相关的测量指标呈中度至高度相关（.5-.8），在探索性分析中还存在额外的中度强相关。当前能力与理想能力之间的平均差距与疼痛（-.56）和当前能力量表（.46）中度相关，但与许多测量指标存在分歧。
本研究的局限性包括缺乏评估治疗对差距反应的干预措施，以及使用小样本进行多项统计检验。
证据支持 MAM 上当前能力的汇聚效度，但主要支持差距的离散性。在确定残疾时，应进一步研究将差距与专门评估患者偏好的测量指标进行比较。
