孕产妇VTE预防知信行量表的构建及信效度检验  

Construction of a knowledge-attitude-practice scale of venous thromboembolism prevention in pregnant and lying-in women and its reliability and validity test

作　　者：邓琛[1] 王丽佳 DENG Chen;WANG Li-jia(Third Xiangya Hospital of Central South University,Changsha,Hunan 410006,China)

机构地区：[1]中南大学湘雅三医院,湖南长沙410006

出　　处：《实用预防医学》2022年第5期626-631,共6页Practical Preventive Medicine

基　　金：湖南省自然科学基金(2018JJ2614)。

摘　　要：目的 编制孕产妇静脉血栓栓塞症(venous thromboembolism, VTE)预防知信行量表,并进行信效度检验。方法 采取文献检索和专家焦点访谈方法构建初步的条目池,通过两轮专家咨询,进一步修改条目池,形成初步的量表,并进行预调查。采用便利抽样的方法,选取于2021年9—10月于长沙市某三甲医院产科门诊就诊孕产妇为研究对象,采取临界比值法、相关系数法、Cronbach’s α系数法、因子分析法四种方法进行条目筛选,结合专业最终决定条目的去留,并对形成的量表进行信效度检验。结果 共回收有效问卷308份。形成53个条目的孕产妇VTE预防知信行量表,其中知识维度包含28个条目,态度维度16条目,行为维度9条目。知识、信念、行为三个维度及总量表的Cronbach’sα系数分别是0.969、0.961、0.870、0.964,分半信度分别是0.912、0.901、0.701、0.694,重测信度分别是0.816、0.679、0.715、0.799。内容效度(content validityindex, CVI):条目水平内容效度指数(item-level CVI,I-CVI)介于0.83~1间,均大于0.780。量表水平的内容效度指数(scale-level CVI,S-CVI)中平均S-CVI(average scale-level CVI,S-CVI/Ave)为0.96,全体一致S-CVI(universal agreement scale-level CVI,S-CVI/UA)为0.83。结构效度:探索性因子分析结果显示提取8因子模型,累计贡献率73.532%;验证性因子分析结果显示误差平方根近似值(root mean square error of approximation, RMSEA)=0.086,增量拟合指数(increnental fit index, IFI)=0.850,塔克-刘易斯指数(Tacker-Lewis index, TLI)=0.841,比较拟合指数(comparative fit index, CFI)=0.849。聚敛效度:各条目因子载荷大于均0.3,各个潜变量的平均方差抽取量(average variance extracted, AVE)大于0.5,组合信度(construct reliability, CR)大于0.8。区分效度:知识、态度、行为维度之间显著相关,相关系数为正数且均小于0.5,并小于AVE平方根。结论 本问卷具有良好的信度和效度,可用于孕产妇VTE预�Objective To develop a knowledge-attitude-practice scale of venous thromboembolism(VET) prevention in pregnant and lying-in women, and to test its reliability and validity. Methods A preliminary item pool was constructed by literature retrieval and expert focus interview. After two rounds of expert consultation, the item pool was further modified to form a preliminary scale, and a preliminary survey was conducted. The convenience sampling method was adopted to select pregnant and lying-in women who visited department of obstetrics of a third-grade class-A hospital in Changsha from September to October 2021 as the research subjects. Four methods including critical ratio method, correlation coefficient method, Cronbach’s α coefficient method and factor analysis method were employed to pick out the items, and the final decision was made based on the specialty. The reliability and validity of the scale were tested. Results A total of 308 valid questionnaires were retrieved. The scale with 53 items was formed, including 28 items concerning knowledge dimension, 16 items concerning attitude dimension and 9 items concerning behavior dimension. Cronbach’s α coefficients of knowledge, attitude, practice and total amount scale were 0.969, 0.961, 0.870 and 0.964, respectively. The split reliability was 0.912, 0.901, 0.701 and 0.694, respectively. The retest reliability was 0.816, 0.679, 0.715 and 0.799, respectively. As for content validity index(CVI), item-level CVI(I-CVI) ranged from 0.83 to 1, which were all greater than 0.780. Among scale-level CVI(S-CVI), average scale-level CVI(S-CVI/Ave) was 0.96, and universal agreement scale-level CVI(S-CVI/UA) was 0.83. As for structural validity, exploratory factor analysis results showed that the cumulative contribution rate of the 8-factor model was 73.532%. The results of confirmatory factor analysis displayed that root mean square error of approximation(RMSEA), increnental fit index(IFI), Tacker-Lewis index(TLI) and comparative fit index(CFI) were 0.086, 0.850, 0.841 and

关 键 词：孕产妇 VTE 知信行 问卷编制 信效度 

分 类 号：R714.25[医药卫生—妇产科学]