Bennett K J, Torrance G W, Moran L A, Smith F, Goldsmith C H
Department of Clinical Epidemiology and Biostatistics, School of Business, McMaster University, Hamilton, Canada.
J Rheumatol. 1997 Sep;24(9):1796-805.
Before-after study: McKnee was feasible and acceptable in the older patient group studied (mean age in years, SD: 69.9, 8.6). No change in self-health utility (mean, SD) was observed at 3 mo postsurgery: before -0.78, 0.17; after -0.78, 0.21. On the SF-36, only the change scores for pain and health transition were statistically significant. Utilities (mean, SD) for the clinical marker health states were: mild -0.80, 0.20; moderate -0.55, 0.28; and severe -0.48, 0.31. The clinical marker mean utility scores were stable between the baseline and 3 mo assessment, but the intraclass correlation coefficients for individual scores were low.
McKnee provides a preference based measure of health related quality of life that can be used to obtain and interpret clinically the knee disability utility scorers needed for cost-utility studies and medical decision-making models about KR surgery. The McKnee system provides a practical and useful method for classifying knee disability health states and obtaining direct measurements of utility scores for selected health states.
前后研究：在研究的老年患者组中（平均年龄，标准差：69.9岁，8.6岁），McKnee是可行且可接受的。术后3个月未观察到自我健康效用（平均值，标准差）的变化：术前 -0.78，0.17；术后 -0.78，0.21。在SF - 36上，只有疼痛和健康转变的变化分数具有统计学意义。临床标志物健康状态的效用（平均值，标准差）为：轻度 -0.80，0.20；中度 -0.55，0.28；重度 -0.48，0.31。临床标志物平均效用评分在基线和3个月评估之间是稳定的，但个体评分的组内相关系数较低。
McKnee提供了一种基于偏好的健康相关生活质量测量方法，可用于在临床上获取和解释成本效用研究及关于KR手术的医疗决策模型所需的膝关节残疾效用评分。McKnee系统为膝关节残疾健康状态的分类以及获取选定健康状态的效用评分直接测量提供了一种实用且有用的方法。
