Depression treatment and diabetes risk: A 9-year follow-up study of the impact trial
Abstract
Objectives: To examine the effect of a collaborative care program for late-life depression on risk of diabetes among depressed, older adults. Method: We conducted a 9-year follow-up study of 160 older, primary care patients with a depressive disorder but without diabetes enrolled at the Indiana sites of the Improving Mood-Promoting Access to Collaborative Treatment (IMPACT) trial. Results: Surprisingly, the rate of incident diabetes in the collaborative care group (22/80 = 27.5%) was twice the rate observed in the usual care group (11/80 = 13.7%). Cox proportional hazards models adjusted for randomization status (HR = 1.94, p = .076), demographic factors (HR = 1.94, p = .075), and additionally for diabetes risk factors (HR = 1.73, p = .157) indicated that the risk of incident diabetes did not differ between the collaborative care and usual care groups, with collaborative care patients remaining at a nonsignificant increased risk. Conclusions: Our novel findings suggest that depression may not be a casual risk factor for diabetes and that depression treatment may be insufficient to reduce the excess diabetes risk of depressed, older adults.
Degree
Ph.D.
Advisors
Stewart, Purdue University.
Subject Area
Psychology|Clinical psychology
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