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GHQ-12 means for cases vs. non-cases that were assigned by meeting DSM-IV diagnostic criteria except nicotine & alcohol disorders based on one-month prevalence
Cases meet criteria for any diagnoses except nicotine & alcohol disorders. Non-cases do not meet criteria for any diagnoses except nicotine & alcohol disorders. GHQ-12: 12-item General Health Questionnaire, DSM-IV: Diagnostic and Statistical Manual of Mental Disorders, fourth edition
