Item Analysis on Quality of Life Instruments for Chronic Pulmonary Heart Disease QLICD-CPHD(V2.0)based on Classical Test Theory and Item Response Theory
10.11783/j.issn.1002-3674.2023.06.001
- VernacularTitle:基于经典测量理论与项目反应理论的慢性肺源性心脏病生命质量测定量表QLICD-CPHD(V2.0)条目分析
- Author:
Liyuan QIAO
1
;
Bin WU
;
Chonghua WAN
Author Information
1. 广东医科大学生命质量与应用心理研究中心/生命质量与心理测评干预重点实验室(523808)
- Keywords:
Chronic pulmonary heart disease;
Item analysis;
Classical test theory;
Quality of life;
Item response theory
- From:
Chinese Journal of Health Statistics
2023;40(6):802-806
- CountryChina
- Language:Chinese
-
Abstract:
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.
