Larsson Brita, Johannesson Anton, Andersson Ingemar H, Atroshi Isam
Department of Clinical Sciences, Lund University, Lund, Sweden.
Health Qual Life Outcomes. 2009 May 23;7:44. doi: 10.1186/1477-7525-7-44.
The Locomotor Capabilities Index (LCI) is a validated measure of lower-limb amputees' ability to perform activities with prosthesis. We have developed the LCI Swedish version and evaluated its validity and reliability.
Cross-cultural adaptation to Swedish included forward/backward translations and field testing. The Swedish LCI was then administered to 144 amputees (55 women), mean age 74 (40-93) years, attending post-rehabilitation prosthetic training. Construct validity was assessed by examining the relationship between the LCI and Timed "Up-and-Go" (TUG) test and between the LCI and EQ-5D health utility index in 2 subgroups of 40 and 20 amputees, respectively. Discriminative validity was assessed by comparing scores in different age groups and in unilateral and bilateral amputees. Test-retest reliability (1-2 weeks) was evaluated in 20 amputees (14 unilateral).
The Swedish LCI showed good construct convergent validity, with high correlation with the TUG (r = -0.75) and the EQ-5D (r = 0.84), and discriminative validity, with significantly worse mean scores for older than younger and for bilateral than unilateral amputees (p < 0.01), and high internal consistency (Cronbach alpha 0.95). In test-retest reliability the intraclass correlation coefficient was 0.91 (95% CI 0.79-0.96) but for the unilateral amputees was 0.83 (95% CI 0.56-0.94). Ceiling effect occurred in 23%.
The Swedish version of the LCI demonstrated good validity and internal consistency in adult amputees. Test-retest reliability in a small subsample appears to be acceptable. The high ceiling effect of the LCI may imply that it would be most useful in assessing amputees with low to moderate functional abilities.
运动能力指数（LCI）是一种经过验证的衡量下肢截肢者使用假肢进行活动能力的指标。我们已开发出LCI瑞典语版本，并对其有效性和可靠性进行了评估。
跨文化改编为瑞典语版本包括正向/反向翻译和现场测试。然后，将瑞典语LCI应用于144名截肢者（55名女性），他们平均年龄74岁（40 - 93岁），正在接受康复后假肢训练。通过分别在40名和20名截肢者的两个亚组中检查LCI与定时起立行走（TUG）测试之间的关系以及LCI与EQ - 5D健康效用指数之间的关系，评估结构效度。通过比较不同年龄组以及单侧和双侧截肢者的得分来评估区分效度。在20名截肢者（14名单侧截肢者）中评估重测信度（1 - 2周）。
瑞典语LCI显示出良好的结构收敛效度，与TUG（r = -0.75）和EQ - 5D（r = 0.84）高度相关，以及区分效度，老年人和双侧截肢者的平均得分明显低于年轻人和单侧截肢者（p < 0.01），并且具有较高的内部一致性（Cronbach α 0.95）。在重测信度方面，组内相关系数为0.91（95% CI 0.79 - 0.96），但单侧截肢者为0.83（95% CI 0.56 - 0.94）。23%出现了天花板效应。
LCI瑞典语版本在成年截肢者中显示出良好的效度和内部一致性。在一个小亚组中的重测信度似乎是可以接受的。LCI的高天花板效应可能意味着它在评估功能能力低至中等的截肢者时最有用。
