冠心病健康教育效果评价指标体系的信效度研究

Assessment of the reliability and validity of the effect evaluation index system for health education of coronary heart disease

目的 考评冠心病健康教育效果评价指标体系的信、效度.方法 采用方便抽样法,选取重庆市4所三级甲等医院的306例冠心病患者进行问卷调查.用项目分析法、探索性因子分析法等进行指标的分析和筛选后,考评该体系的内部一致性信度、重测信度、结构效度等,形成最终的指标体系.结果 最终形成具有8个维度35个指标的冠心病健康教育效果评价指标体系.信度方面,指标体系总Cronbachα系数为0.832,各维度Cronbach α系数为0.629～0.882;该体系总重测信度为0.966,各维度重测信度为0.848～0.942.效度方面,S-CVI/Ave为0.99,S-CVI/UA为0.91;各指标与所属维度的Pearson相关系数为0.574～0.916,均高于指标与其他维度的相关系数.探索性因子分析抽取的8个公因子累积贡献率为65.61％,各指标因子载荷为0.430～0.938.结论 冠心病健康教育效果评价指标体系具有良好的信、效度,可为冠心病健康教育效果评价提供统一的参考标准.

Objective To assess the reliability and validity of the effect evaluation index system for health education of coronary heart disease.Methods A total of 306 patients with coronary heart disease in four third-grade and A-level hospitals extacted by convenient sampling method were surveyed.Project analysis,exploratory factor analysis,correlation analysis and so on were applied to analyze and select items.Then the Cronbach＇s alpha coefficient,test-retest reliability,and content validity of the scale were tested.Then the original system was modified and the eventual system was formed.Results The scale was consisted of 8 first-dimensions and 35 indexes.The Cronbach＇s α of the total system was 0.832,and the α of subscales were from 0.629 to 0.882.The test-retest reliability of the total system was 0.966,and the testretest reliability of subscales were from 0.848 to 0.942.The S-CVI/Ave of system was 0.99,and the S-CVI/UA of indexes was 0.91.The Pearson correlation coefficient of the indexes with their dimensions were from 0.574 to 0.916,which were higher than the coefficient of the indexes with other dimensions.Factor analysis supported the eight-factor structure of the system,which could explain 65.61% of the total variance and the factor loading of each index were from 0.430 to 0.938.Conclusions The system is reliable and valid,and can provide a unified reference standard for effect evaluation of health education of coronary heart disease.