腹膜透析相关性腹膜炎预防知信行量表的构建及信效度检验

Construction of Knowledge,Belief and Practice Scale for Prevention of Peritoneal Dialysis-associated Peritonitis and Test of Reliability and Validity

目的:构建适用于腹膜透析患者的腹膜透析相关性腹膜炎预防知信行量表,并检验信效度。方法:以知信行理论为指导,采用文献回顾、质性访谈和德尔菲专家函询法并在预调查的基础上形成初始量表。采取便利抽样法选取安徽省3所三级甲等医院腹透中心随访的268名腹膜透析患者进行调查。采用临界比值法、相关系数法、Cronbach′s α系数法和因子分析法进行条目筛选,采用内部一致性和重测信度进行信度检验,采用内容效度和结构效度进行效度检验。结果:形成的腹膜透析相关性腹膜炎预防知信行量表包括知识、信念和行为3个维度,共34个条目;总问卷和各维度的Cronbach′s α系数分别是0.972、0.971、0.968、0.949;分半信度分别是0.825、0.983、0.981、0.905,重测信度分别是0.830、0.710、0.800、0.635;条目水平内容效度指数介于0.95~1之间,量表水平的内容效度指数为0.976;探索性因子分析结果显示提取3因子模型,累计方差贡献率74.143%;验证性因子分析结果显示量表拟合度良好。结论:本问卷具有良好的信效度,可为医护人员开展腹膜透析患者腹膜透析相关性腹膜炎预防现状评估提供参考。

Objective:To construct a knowledge and practice scale for the prevention of peritoneal dialysis-related peritonitis in patients with peritoneal dialysis,and to test the reliability and validity of the scale.Methods:Under the guidance of the theory of knowledge,belief and action,literature review,qualitative interview and Delphi expert correspondence were used to form an initial scale based on pre-investigation.A total of 268 patients with peritoneal dialysis who were followed up at peritoneal dialysis centers in 3 Grade A hospitals in Anhui Province were investigated by the convenient sampling method.Items were screened by critical ratio method,correlation coefficient method,Cronbach′sαcoefficient method and factor analysis method.Internal consistency and retest reliability were used for reliability test,and content validity and structure validity were used for validity test.Results:The scale of knowledge and practice for prevention of peritoneal dialysis-related peritonitis consisted of 34 items in 3 dimensions:knowledge,be-lief and behavior.The Cronbach′sαcoefficients of the total questionnaire and each dimension were 0.972,0.971,0.968,0.949,respectively.The half-point reliability was 0.825,0.983,0.981,0.905,and the retest reliability was 0.830,0.710,0.800,0.635,respectively.The item level content validity index was between 0.95~1,and the content validity index of the scale level was 0.976.The results of exploratory factor analysis showed that the cumulative variance contribution rate of 3-factor model was 74.143%.The results of confirmatory factor analysis showed that the scale fit well.Conclusion:This questionnaire has good relia-bility and validity,and can provide reference for medical staff to evaluate the prevention status of peritoneal dialysis-associated peri-tonitis in patients with peritoneal dialysis.