中国全科医学2012，Vol.15Issue(22)：2544-2547,4.DOI:10.3969/j.issn.1007-9572.2012.08.019
慢性病患者生命质量测定量表体系共性模块项目反应理论的进一步分析
Using Item Response Theory to Analyze General Module of Quality of Life Instruments for Chronic Diseases
摘要
Abstract
Objective To analyze the general module of quality of life instruments for chronic diseases ( QLICD - GM ) using item response theory ( IRT ) . Methods A total of 1 024 patients each with one of the eight chronic diseases were measured by QLICD - GM. Samejima's Graded Response Model and software MULTILOG were used to calculate difficulty coefficient, discrimination coefficient, and information power, and to draw item characteristic curve. Results Of all 30 items, the discrimination coefficient fell between 1. 17 and 1. 88, and difficulty coefficient increased monotonically ( ranging from -2. 88 to 2. 27 ). Twenty - four good items were selected by average information power ( ranging from 0. 36 to 0. 97 ) and item characteristics. Conclusion IRT can select items with higher information power and provide accurate quantitative analysis on each item.关键词
慢性病/生命质量/项目反应理论/信息函数Key words
Chronic disease/ Quality of life/ Item response theory/ Information function分类
医药卫生引用本文复制引用
杨铮,戚艳波,万崇华,李晓梅,许传志,张晓磬,赵芝焕,李红..慢性病患者生命质量测定量表体系共性模块项目反应理论的进一步分析[J].中国全科医学,2012,15(22):2544-2547,4.基金项目
国家自然科学基金(30860248) （30860248）
东莞市医疗卫生科技计划重点项目(2011105102008) （2011105102008）
