Qi Bing-Bing, Resnick Barbara, Nahm Eun-Shim
J Nurs Meas. 2014;22(2):342-56. doi: 10.1891/1061-3749.22.2.342.
The purpose of this study was to test the psychometric properties of the Osteoporosis Knowledge Test (OKT) revised to incorporate recent evidence-based recommendations for bone health.
The revised OKT was tested with 866 participants (mean age = 62.8 years +/- 8.5 years) in an online bone health study.
Based on Rasch analysis, there was evidence of internal consistency with an item separation index of 12.68 and a reliability score of .98. The person separation index was 2.06 with a reliability score of .81. The INFIT and OUTFIT mean-square statistics for items on both subscales all demonstrated good fit ranging from 0.71 to 1.40, except for 2 items that had low OUTFIT statistics.
The revised OKT provides sufficient reliability and construct validity.
本研究旨在测试经修订以纳入近期基于证据的骨骼健康建议的骨质疏松症知识测试（OKT）的心理测量特性。
在一项在线骨骼健康研究中，对866名参与者（平均年龄 = 62.8岁±8.5岁）进行了修订后的OKT测试。
基于拉施分析，有证据表明其内部一致性良好，项目区分指数为12.68，信度得分为0.98。人员区分指数为2.06，信度得分为0.81。两个子量表上项目的INFIT和OUTFIT均方统计量均显示出良好的拟合度，范围从0.71到1.40，但有2个项目的OUTFIT统计量较低。
修订后的OKT具有足够的信度和结构效度。
