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Validation and Utility of the Patient Health Questionnaire in Diagnosing Mental Disorders in 1003 General Hospital Spanish Inpatients

From the Department of Psychiatry, Autonomous University of Barcelona; University Hospital "Germans Trias i Pujol" (C.D.-Q. and L.S.-P.) and Biomedical Research Foundation "Germans Trias i Pujol," (T.R.) Badalona, Spain; Regenstrief Institute for Health Care, Department of Medicine (K.K), Indiana University, Indianapolis, Indiana (K.K.); and Department of Psychiatry (R.L.S), Columbia University, New York.

View larger version (48K): [in a new window]   Fig. 1. Relationship of PHQ results to functional status (SF-20 scales). Because of missing data for some patients, the range of numbers of patients across scales was as follows: symptom-screen–negative, 409 to 422; symptom-screen–positive but no psychiatric diagnosis, 152 to 157; subthreshold psychiatric diagnosis, 197 to 208; and threshold psychiatric diagnosis, 190 to 201.