骨质疏松患者自我管理行为量表的效度和信度评价

目的 构建骨质疏松患者自我管理行为量表并对其进行效度和信度检验。 方法 于2016年12月对20家参与上海市骨质疏松社区规范诊疗和管理试点项目的社区卫生服务中心采用方便抽样的方法选取了597名骨质疏松患者进行问卷调查。 结果 量表的项目分析显示,所有题项的CR值均>3,与总分的相关显著,且相关系数均>0.3。效度分析的结果显示,除2个题项条目水平的内容效度指数(I-CVI)较低外,其余所有题项的I-CVI均为1,在修改后的量表中,全体一致量表水平的内容效度指数(S-CVI/UA)和平均量表水平的内容效度指数(S-CVI/Ave)也都为1。探索性因子分析采用主成分分析法提取了3个公因子,累积贡献率达78.373%,验证性因子分析结果显示所有拟合优度相关统计量都满足模型拟合的要求。以自我效能作为校标,本量表与其得分的相关系数r=0.567,P<0.001。信度分析的结果显示,本量表总体Cronbach'α系数为0.889,各维度Cronbach'α系数0.812~0.928。折半信度的Spearman-Brown系数为0.956。 结论 骨质疏松患者自我管理行为量表具有较好的信度和效度,具有较广的实际应用价值。 

Evaluation of validity and reliability of self-management behavior scale for community patients with osteoporosis

Objective To construct a self-management behavior scale for patients with osteoporosis and test its validity and reliability. Methods A total of 597 osteoporosis patients were selected for questionnaire survey by convenient sampling from 20 community health service centers, which involved in the pilot project of standard treatment and management of osteoporosis in Shanghai. Results The item analysis showed that the CR value of all items was greater than 3, and the correlation with the total score was significant, with correlation coefficient greater than 0.3. The result of validity analysis showed that I-CVI was 1 for all items except for 2 items with a lower I-CVI. In the revised scale, both S-CVl/UA and S-CVI/Ave were 1. Exploratory factor analysis was used to extract three components and the cumulative variance explained was 78.373%. The results of confirmatory factor analysis showed that all goodness-of-fit statistics satisfied the model fitting requirements. The correlation coefficient between score of self-management behavior questionnaire and that of osteoporosis self-efficacy scale was 0.567, P<0.001. Reliability analysis showed that the overall Cronbach'α coefficient of this scale was 0.889 and the Cronbach'α coefficient of each dimension ranged from 0.812 to 0.928. The Spearman-Brown coefficient was 0.956. Conclusion The osteoporosis self-management behavior scale has a good reliability and validity, and would have a wide range of practical value.