孕妇体重增长控制意向量表的编制及信效度检验

Development of Pregnancy Weight Gain Control Intention Scale and its reliability and validity

目的编制孕妇体重增长控制意向量表,并进行信效度检验。方法本研究为横断面研究。基于计划行为理论、文献回顾、半结构式访谈构建量表条目池,通过专家函询和预调查形成量表初稿。2022年2—4月,采用便利抽样法选取镇江市2所三级甲等医院的300名孕妇为研究对象,通过项目分析、探索性因子分析对量表进行进一步修订。2022年5—7月,选取镇江市2所三级甲等医院的350名孕妇进行正式调查,采用验证性因子分析、信度检验评价信效度。调查完成后2周,选取30名孕妇进行重测信度检验。结果第1阶段调查共发放300份问卷,回收有效问卷282份,有效回收率为94.00%(282/300)。第2阶段调查共发放问卷350份,回收有效问卷324份,有效回收率为92.57%(324/350)。正式量表包括行为态度、主观规范、知觉行为控制3个维度,共20个条目。探索性因子分析提取3个公因子,累计方差贡献率为80.198%。验证性因子分析结果显示,量表结构模型拟合指数良好。量表水平的内容效度指数为0.980,各条目水平的内容效度指数为0.830~1.000,量表Cronbach'sα系数为0.917,折半信度系数为0.709,重测信度系数为0.860。结论孕妇体重增长控制意向量表具有良好的信效度,可作为评估孕妇体重增长控制意向的评估工具。

Objective To develop the Pregnancy Weight Gain Control Intention Scale and test its reliability and validity.Methods This is a cross-sectional study.The item pool of the scale was constructed based on the theory of planned behavior,literature review and semi-structured interview,and the draft of the scale was formed through expert correspondence and pre-investigation.From February to April 2022,a total of 300 pregnant women from 2 ClassⅢGrade A hospitals in Zhenjiang were selected as research objects by convenience sampling method,and the scale was further revised through item analysis and exploratory factor analysis.From May to July 2022,a formal investigation was conducted among 350 pregnant women from 2 ClassⅢGrade A hospitals in Zhenjiang,and confirmatory factor analysis and reliability test were used to evaluate the reliability and validity.Two weeks after the completion of the survey,30 pregnant women were selected for retest reliability test.Results In the first stage of the survey,a total of 300 questionnaires were distributed,and 282 valid questionnaires were effectively collected,with an effective recovery rate of 94.00%(282/300).A total of 350 questionnaires were distributed in the second phase of the survey,and 324 valid questionnaires were effectively collected,with an effective recovery rate of 92.57%(324/350).The formal scale includes 3 dimensions and 20 items,namely behavior attitude,subjective norm and perceived behavior control.Three common factors were extracted by exploratory factor analysis,and the cumulative variance contribution rate was 80.198%.The results of confirmatory factor analysis showed that the scale structure model fit was well.The scale-level content validity index was 0.980,the item-level content validity index was 0.830-1.000,the Cronbach'sαcoefficient of the scale was 0.917,the split-half reliability coefficient was 0.709,and the retest reliability coefficient was 0.860.Conclusions The Pregnancy Weight Gain Control Intention Scale has good reliability and validity,and can be used as an evaluation tool to evaluate the weight gain control intention of pregnant women.