医学研究生满意度量表的构建及其信度和效度分析

Construction and reliability and validity analysis of satisfaction scale for medical graduates

目的构建医学研究生满意度量表并对其信度和效度进行评估分析。方法2017年9月,对广西医科大学的2961名在读全日制研究生进行满意度问卷调查。利用探索性因子分析方法构建了满意度量表的维度并评价效度,利用验证性因子分析方法验证量表的适配性。结果满意度量表共包含31个条目,总体克朗巴赫系数为0.972;经主成分法提取出5个公因子,累计贡献率达到81.09%。验证性因子分析结果显示,调查量表修正后,卡方自由度比χ^2/df为4.451(95%CI=4.321~4.558),近似误差均方根(root mean square error of approximation,RMSEA)为0.062(95%CI=0.058~0.069),其他增值适配度指标均大于0.9;各条目的标准化载荷均超过0.71,且均具有统计学意义(t>1.96,P<0.05)。结论医学研究生满意度量表具有良好的信度和效度,且适用性良好,可以作为医学研究生满意度的调查工具并推广使用。

Objective To construct the satisfaction scale for medical graduates and evaluate its reliability and validity.Methods Totally 2961 full-time postgraduates from Guangxi Medical University were investigated in September 2017.Exploratory factor analysis was used to construct dimensions and evaluate the validity.Confirmatory factor analysis was used to verify the scale's fitness.Results A total of 31 items were included in the scale.The overall Cronbach's α coefficient was 0.972.Five common factors were extracted by the principal components method and the cumulative contribution rate reached 81.09%.The results of confirmatory factor analysis showed that χ^2/df was 4.451(95%CI=4.321~4.558),root mean square error of approximation(RMSEA)was 0.062(95%CI=0.058~0.069),other value-added fitness indicators were all over 0.9;the standardized load of each item was over 0.71 and had statistical significance(t>1.96,P<0.05).Conclusions The scale has good reliability,validity and applicability.It can be used as a tool to evaluate satisfaction for medical graduates.