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Randomised controlled trial.
Single blind (outcome assessors blinded).
Two years (1 year intervention period and 1 year follow-up).
Eighteen primary care clinics, USA; time period not stated.
1801 older adults (aged 60 years or over) with DSM-IV major depression, dysthymia, or both. Exclusions: acute suicide risk, ongoing alcohol abuse, severe cognitive dysfunction, or history of bipolar disorder or psychosis.
Improving Mood: Promoting Access to Collaborative Treatment (IMPACT) for Late-Life Depression in Primary Care (1-year collaborative care programme in which a specially trained depression care manager …
For correspondence: Professor Jurgen Unutzer, Department of Psychiatry and Behavioral Sciences, Box 356560, University of Washington School of Medicine, 1959 NE Pacific Street, Seattle, Washington 98195, USA;
Sources of funding: John A Hartford Foundation, California HealthCare Foundation, Hogg Foundation, Robert Wood Johnson Foundation.
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