Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, USA; Department of Psychosomatic Medicine, Medical School, Charité Universitätsmedizin Berlin, Berlin, Germany.
National Research Centre for the Working Environment, Copenhagen, Denmark; i3 QualityMetric Incorporated, Lincoln, RI, USA; Institute of Public Health, University of Copenhagen, Denmark.
J Clin Epidemiol. 2014 May;67(5):516-26. doi: 10.1016/j.jclinepi.2013.10.024.
To document the development and psychometric evaluation of the Patient-Reported Outcomes Measurement Information System (PROMIS) Physical Function (PF) item bank and static instruments.
The items were evaluated using qualitative and quantitative methods. A total of 16,065 adults answered item subsets (n>2,200/item) on the Internet, with oversampling of the chronically ill. Classical test and item response theory methods were used to evaluate 149 PROMIS PF items plus 10 Short Form-36 and 20 Health Assessment Questionnaire-Disability Index items. A graded response model was used to estimate item parameters, which were normed to a mean of 50 (standard deviation [SD]=10) in a US general population sample.
The final bank consists of 124 PROMIS items covering upper, central, and lower extremity functions and instrumental activities of daily living. In simulations, a 10-item computerized adaptive test (CAT) eliminated floor and decreased ceiling effects, achieving higher measurement precision than any comparable length static tool across four SDs of the measurement range. Improved psychometric properties were transferred to the CAT's superior ability to identify differences between age and disease groups.
The item bank provides a common metric and can improve the measurement of PF by facilitating the standardization of patient-reported outcome measures and implementation of CATs for more efficient PF assessments over a larger range.
记录患者报告结局测量信息系统（PROMIS）身体机能（PF）项目库和静态仪器的开发和心理计量学评估。
使用定性和定量方法评估项目。共有 16065 名成年人在互联网上回答项目子集（n>2200/项），对慢性病患者进行了过采样。采用经典测试和项目反应理论方法评估了 149 项 PROMIS PF 项目，外加 10 项短式 36 项和 20 项健康评估问卷残疾指数项目。采用渐进反应模型估计项目参数，在美国普通人群样本中，将参数规范为均值 50（标准差[SD]=10）。
最终的银行由 124 个 PROMIS 项目组成，涵盖上肢、中央和下肢功能以及日常生活活动的工具。在模拟中，10 项计算机自适应测试（CAT）消除了地板效应，降低了天花板效应，在测量范围的四个标准差内，比任何可比长度的静态工具都具有更高的测量精度。改进的心理计量学特性转移到 CAT 能够识别年龄和疾病组之间差异的卓越能力上。
该项目库提供了一个通用的衡量标准，可以通过促进患者报告结局测量的标准化以及 CAT 的实施，在更大范围内更有效地评估身体机能，从而提高身体机能的测量。
