Research in the Joseph Gallo Lab focuses on the form and course of depression in older adults; treatment in primary care settings; the use of mixed methods in health services research; and the epidemiology of psychiatric disorders in the population. Using NIMH Epidemiologic Catchment Area survey data, we have conducted studies using novel statistical modeling (the MIMIC model) to explore how depression presents differently among older adults versus younger people. We are taking part in the long-term follow-up of PROSPECT (Prevention of Suicide in Primary Care Elderly – Collaborative Trial) — a randomized study of depression management in primary care practices — and have examined mortality as an outcome in the context of medical comorbidity.