Medical School, University of Tampere and Psychiatric Clinic, Tampere University Hospital
Tampere School of Public Health, University of Tampere and Tampere University Hospital, Research Unit
Tampere School of Public Health, University of Tampere and Psychiatric Clinic, Tampere University Hospital, Tampere
Department of Psychiatry, University of Turku, Turku University Central Hospital and Turku Psychiatric Clinic, Turku, Finland
Correspondence: Dr Outi Poutanen, Department of Psychiatry, Medical School, FIN-33014 University of Tampere, Finland. Email: outi.poutanen{at}uta.fi
Funding from the Medical Research Fund of Tampere University Hospital.
Background There are numerous instruments for screening for depression. A feasible screen is good at both recognising and predicting depression.
Aims To study the ability of the Depression Scale and its items to recognise and predict a depressive episode.
Method A sample of patients attending primary care was examined in1991-992 and again 7 years later. The accuracy of the Depression Scale at baseline and at follow-up was tested against the Short Form of the Composite International Diagnostic Interview (CIDI-SF) diagnosis of depression at follow-up. The sensitivity and specificity of the Depression Scale and its items were assessed.
Results Both baseline and follow-up Depression Scale scores were consistent with the CIDI-SF diagnoses. It was possible to find single items efficient at both recognising and predicting depression.
Conclusions The Depression Scale is a useful screening instrument for depression, with both diagnostic and predictive validity.
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