• Over one half of all persons seen in a primary care clinic were identified as having anxiety or depressive disorder by the primary care provider, the General Health Questionnaire (GHQ), or the Diagnostic Interview Schedule (DIS). In only about 5% of all patients were findings positive on all three assessments concurrently. Both the GHQ and the practitioners identified over 30% of all patients as having a disorder, while about 8% had one or more of five DIS anxiety or depressive disorders (major depression, dysthymia, panic disorder, generalized anxiety disorder, or obsessive-compulsive disorder). Of the patients with DIS disorders 83% had positive GHQ scores, and 73% were identified by the practitioner as having a mental disorder.
Von Korff M, Shapiro S, Burke JD, Teitlebaum M, Skinner EA, Turner RW, Klein L, Burns B. Anxiety and Depression in a Primary Care ClinicComparison of Diagnostic Interview Schedule, General Health Questionnaire, and Practitioner Assessments. Arch Gen Psychiatry. 1987;44(2):152-156. doi:10.1001/archpsyc.1987.01800140058008