饮酒情景量表中文版应用于大学生的信度和效度分析

Validity and reliability of Chinese Version of Drinking Context Scale(DCS-9)

目的评价饮酒情景量表(Drinking Context Scale,DCS-9)中文译本的信、效度,为评估中国高校学生饮酒问题及潜在的心理社会功能损害提供工具。方法招募温州地区高校学生500名为研究对象,进行DCS-9评定,由2名精神科主治医师根据ICD-10酒精滥用诊断标准进行诊断性面谈。计算Cronbach'sα系数评价量表内部一致性,计算2次测量相关系数考评重测信度,采用验证性因子分析方法考评结构效度,通过DCS-9与酒精使用障碍筛查量表的相关分析来评价效标效度。以ICD-10酒精滥用诊断为参考,根据受试者工作特征曲线下面积判断DCS-9的区分效度,并划定量表的界值分。结果 DCS-9量表总Cronbach'sα系数为0.85,3个分量表Cronbach'sα系数分别为0.77,0.65,0.73。重测信度相关系数为0.95。验证性因素分析显示,GFI=0.959,NFI=0.890,CFI=0.903,TLI=0.902,χ2/df=2.950,P=0.037,RE-MEA=0.041,结构效度符合测量学标准。各条目对其因子的负荷系数在0.59～0.85之间,校标效度相关系数为0.65(P<0.05)。DCS-9界值分为≥14分时区分酒精滥用灵敏度为78.8%,特异度为81.0%。结论 DCS-9中文译本具有较好的信效度,可推荐使用该量表筛查中国高校学生饮酒情景以及酒精滥用问题。

Objective To evaluate the validity and reliability of the Drinking Context Scale（DCS-9） among the students in colleges of Wenzhou District.Methods A total of 500 students recruited from universities or colleges of Wenzhou District to participate in the study,all the students were screened by the DCS-9 and Alcohol Use Disorder Identification Test（AUDIT） and interviewed by two psychiatrists according to the criteria of ICD-10.Cronbach＇s α was applied for examining internal consistency of the scale,the correlation analysis was used to examine the test-retest reliability of the scale.Confirmation Factor analysis was used to examine the construct validity.Correlation analysis between DCS-9 and AUDIT was conducted to evaluate the criterion validity.Based on clinical criteria,ROC curve was calculated so as to test the discriminative ability and establish the cut-off point of DCS-9.Results Cronbach＇s α of the scale was 0.85,the Cronbach＇s α of the subscale was 0.77,0.65 and 0.73,respectively.The test-retest reliability was 0.95.Confirmation factor analysis revealed that GFI was 0.959,NFI was 0.890,CFI was 0.903,TLI was 0.902,χ2=/df was 2.950,P=0.037,REMEA was 0.041,each item of the scale had relatively high load on the sub-factor（0.59-0.85）.Total score of the DCS-9 was positively correlated with that of AUDIT（r=0.65,P0.05）,the cut-off point of DCS-9 for alcohol abuse was determined as ≥14.With this cut-off point,DCS-9 had both high sensitivity（78.8%） and specificity（81.0%）.Conclusion DCS-9 has good reliability and validity and can screen the state of the young adult students alcohol abuse,it may be used as a screen instrument to evaluate the problems of college students alcohol problems.