冠心病临床专家调查问卷信度效度分析

Analysis of Reliability and Validity for Clinical Experts Questionnaire about Coronary Heart Disease

目的分析冠心病证候要素、证候特征及证候病机演变规律临床专家调查问卷的信度和效度。方法向305名临床一线心血管病医生发放"冠心病临床一线专家调查问卷"对冠心病四诊资料进行分期描述,并分别对量表的各模块及总量表进行信度及效度检验。结果Cronbach’sα系数:各个模块在0.9593～0.9725之间均大于0.8,整个问卷的Cronbach’sα系数值为0.9903。分半信度:各个模块在0.8918～0.9225之间,总量表的分半信度Cronbach’sα系数值为0.9207。因子分析结果显示:各个模块分别提取4个公因子,累计贡献率均在50%以上,采用方差最大旋转后的结果与理论构想一致。结论该调查问卷能够全面反映冠心病患者症状和体征,可以利用其进行冠心病的证候研究。

Objective To study the reliability and validity of clinical experts questionnaire of syndrome factors, characteristics and evolution of coronary heart disease. Methods The clinical expert questionnaire was sent to 305 clinical doctors of cardiovascular disease. The questionnaire of coronary heart disease was described through four phases data, and reliability and validity of each module and the total scale were tested. Results Cronbach＇s a coefficient of the modules varies between 0.9593-0.972 5 and higher than 0.8, the value of the scale was 0.990 3. Split-half reliability of the modules varies between 0.891 8-0.922 5, Cronbach＇s a of split-half reliability of the total scale was 0.920 7. Factor analysis showed that each module was abstracted four factors and the total contribution rate was more than 50%, the result after varimax rotation was consistent with the theory. Conclusion The questionnaire can fully reflect symptoms and signs of patients with coronary heart disease, and can be used for syndrome studies of coronary heart disease.