呼吸困难灾难化量表的汉化及在COPD患者中的信效度检验

Translation and validation of the Chinese version of the Breathlessness Catastro- phizing Scale in patients with COPD

目的汉化呼吸困难灾难化量表(Breathlessness Catastrophizing Scale,BCS),并在COPD患者中检验信效度。方法采用Brislin翻译模型,对BCS进行正译、回译、文化调适及预调查形成中文版BCS。通过便利抽样法,选取苏州市5所医院就诊的330例COPD患者进行调查,验证量表的信效度。结果通过探索性因子分析提取1个公因子,方差贡献率为69.532%;验证性因子分析显示1个条目的标准载荷系数<0.6,删除该路径后,单因子模型拟合可接受。最终形成的中文版BCS包括1个维度、12个条目。量表水平的内容效度指数为0.985,条目水平的内容效度指数为0.857~1.000;量表的Cronbach′sα系数为0.956,Spearman-Brown折半信度为0.894,重测信度为0.895。结论中文版BCS信效度良好,可作为中国文化背景下COPD患者呼吸困难灾难化水平的评估工具。

Objective To translate the Breathlessness Catastrophizing Scale(BCS)into Chinese,and to test its reliability and validity in COPD patients.Methods Following the Brislin translation model,the Chinese version of the BCS was developed through forward and backward translation,cultural adaptation,and pilot test.Then,a convenience sample of 330 COPD patients attending outpatient clinics at 5 hospitals in Suzhou were surveyed to validate the reliability and validity of the scale.Results Exploratory factor analysis identified 1 factor that explained 69.532%of the variance.Confirmatory factor analysis showed that 1-factor structure with 13 items was not well fit,then 1 item with factor loading less than 0.6 was deleted and the new model fitted well.The Chinese version of the BCS was a single factor scale consisting of 12 items.The content validity index of the total scale was 0.985 and item-level content validity index ranged from 0.857 to 1.000.The Cronbach′sαcoefficient for the scale was 0.956,the split-half reliability was 0.894 and the test-retest reliability was 0.895.Conclusion The Chinese version of the BCS is valid and reliable for mea-suring breathlessness catastrophizing in COPD patients in the Chinese context.