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目的:检验广泛性焦虑量表(GAD-7)在军人群体中的信度与效度。方法:采用分层随机抽样方法抽取553名军人完成GAD-7、患者健康问卷抑郁症状群量表(PHQ-9)的评定;随机抽取113名接受美国精神障碍诊断和统计手册第4版临床定式访谈(Structured Clinical Interview for DSM-IV,SCID),并计算GAD-7的信度系数、敏感度、特异度等。结果:GAD-7的内部一致性系数为0.876;GAD-7与PHQ-9总分相关系数为0.653。在与SCID比较时,GAD-7的灵敏度为92.3%,特异度为90.5%,Kappa值为0.847(P<0.05)。ROC曲线中,在GAD-7截点值取10分时,灵敏度和特异度分别为89%和82%,曲线下面积为91.7%。结论:GAD-7在军人群体应用中具有较好的信度和效度。
OBJECTIVE: To test the reliability and validity of the Generalized Anxiety Inventory (GAD-7) in the military population. Methods: A total of 553 soldiers were selected by stratified random sampling to assess the symptoms of GAD-7 and the Depression Symptom Inventory Scale (PHQ-9) of patients’ health questionnaires. One hundred and thirty-three patients were randomly selected from the American Psychiatric Disorders Diagnostic and Statistical Manual (Structured Clinical Interview for DSM-IV, SCID), and calculate the reliability coefficient, sensitivity, specificity and so on of GAD-7. Results: The internal consistency coefficient of GAD-7 was 0.876; the correlation coefficient of GAD-7 and PHQ-9 was 0.653. GAD-7 had a sensitivity of 92.3%, a specificity of 90.5%, and a Kappa value of 0.847 (P <0.05) when compared to SCID. In the ROC curve, the sensitivity and specificity of the GAD-7 cut-off point were 89% and 82%, respectively, and the area under the curve was 91.7%. Conclusion: GAD-7 has good reliability and validity in military service.