摘要
目的应用经典测量理论(classical test theory,CTT)和项目反应理论(item response theory,IRT)对慢性肺源性心脏病生命质量测定量表[QLICD-CPHD(V2.0)]进行条目分析与评价。方法采用QLICD-CPHD(V2.0)量表对184名慢性肺源性心脏病患者进行调查,运用经典测量理论中的相关系数法、变异度法、因子分析法、克朗巴赫系数法对QLICD-CPHD(V2.0)量表的条目进行分析评定,同时运用项目反应理论中的Samejima等级反应模型计算量表每个条目的难度、信息量和区分度系数。结果CTT结果提示存在7个条目不满足至少3种的统计学要求,其中共性模块6个,特异模块1个。IRT结果显示条目区分度范围为1.18~1.44较为适宜。难度系数随难度等级(B1→B4)增加而单调递增,存在部分条目难度系数b超过标准值范围。各条目平均信息量分布在0.185~0.576。结论经CTT与IRT分析,QLICD-CPHD(V2.0)量表的大部分条目质量较高,具有较好的区分度,但仍有少量条目需进一步分析和修订。
Objective To analyze and evaluate the items of the QLICD-CPHD(V2.0)scale for chronic pulmonary heart disease using classical test theory(CTT)and item response theory(IRT).Methods 184 patients with chronic pulmonary heart disease were investigated by QLICD-CPHD(V2.0)scale.The items of the QLICD-CPHD(V2.0)scale was evaluated by some statistical methods based on CTT including correlation coefficient method,variance method,factor analysis method and Cronbach′s α coefficient method.Meanwhile,Samejima hierarchical response model of item response theory was utilized to calculate the difficulty,information and differentiation coefficient content of each item in the scale.Results CTT results showed that 7 items failed meet at least three or more statistical requirements,including 6 items in the general module and 1 item in the disease specific module.IRT results showed that the range of item differentiation was 1.18~1.44,which was suitable.The difficulty coefficient increases monotonously with the increase of the difficulty level(B1→B4),and some items exceed the standard value range.The average information amount of each item ranges from 0.185~0.576.Conclusion By CTT and IRT analysis,most items of the QLICD-CPHD(V2.0)scale have good performance and good differentiation,but a few items still need further revision.
作者
谯立媛
吴斌
万崇华
黎东明
赵芝焕
阮景昊
Qiao Liyuan;Wu Bin;Wan Chonghua(Guangdong Medical University(523808),Dongguan)
出处
《中国卫生统计》
CSCD
北大核心
2023年第6期802-806,共5页
Chinese Journal of Health Statistics
基金
国家自然科学基金(71373058,30860248)
广东省科技计划(2013B021800074)。
关键词
慢性肺源性心脏病
条目分析
经典测量理论
生命质量
项目反应理论
Chronic pulmonary heart disease
Item analysis
Classical test theory
Quality of life
Item response theory