产妇分娩心理创伤评估意愿量表的编制及信效度检验

Preparation and validity of the willingness scale to assess maternal psychological trauma during childbirth

目的编制产妇分娩心理创伤评估意愿的量表并检验其信效度。方法通过质性研究、专家函询、预实验、大样本调查的方式,采用目的抽样法,于2021年11月至2022年1月以四川省5所三甲医院22名产妇为研究对象进行质性访谈并构建问卷条目池,再通过专家函询的结果构建量表初稿;并于2022年2月至6月选取171名产妇进行预实验,通过项目分析优化量表条目,并进行探索性因子分析,再对264名产妇进行大样本调查,测量量表的信效度。结果量表包括1个维度、15个条目;探索性因子分析提取1个公因子,累计方差贡献率为80.890%;验证性因子分析显示,量表的模型适配度良好(χ2/df=2.386,RMSEA=0.069,GFI=0.94,CFI=0.964,RMR=0.032,NFI=0.94,NNFI=0.958);各个条目水平内容效度指数为0.800~1.000,量表水平的内容效度指数为0.860;总量表的Cronbach’sα为0.993,量表的折半信度为0.918,重测信度为0.885。结论产妇分娩心理创伤评估意愿量表具有良好的信效度。

Objective To develop a scale of maternal willingness to assess psychological trauma during childbirth and test its reliability and validity.Methods By means of qualitative research,expert letter consultation,pre-experiment,and large sample survey,objective sampling method was adopted to conduct qualitative interviews and construct questionnaire item pool among 22 pregnant women from five first-class hospitals in Sichuan Province from November 2021 to January 2022,and then construct the draft scale based on the results of expert letter consultation.From February to June 2022,a total of 171 pregnant women were selected for pre-experiment,items of the scale were optimized through item analysis,exploratory factor analysis was carried out,and a large sample of 264 pregnant women were investigated to measure the reliability and validity of the scale.Results The final scale consisted of one dimension and 15 items.Exploratory factor analysis extracted one common factor and the cumulative variance contribution rate was 80.890%.The confirmatory factor analysis showed that the model fit of the scale was good(χ2/df=2.386,RMSEA=0.069,GFI=0.94,CFI=0.964,RMR=0.032,NFI=0.94,NNFI=0.958).The I-CVI was 0.800-1.000 and the S-CVI was 0.860.The Cronbach’sαwas 0.993.The half-reliability was 0.918,and the retest reliability was 0.885.Conclusion The willingness scale to assess maternal psychological trauma during childbirth has good reliability and validity.