Intervention to Prevent Major Depression in Primary Care: A Cluster Randomized Trial
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Abstract
Background:
Not enough is known about universal prevention of depression in adults.
Objective:
To evaluate the effectiveness of an intervention to prevent major depression.
Design:
Multicenter, cluster randomized trial with sites randomly assigned to usual care or an intervention. (ClinicalTrials.gov: NCT01151982)
Setting:
10 primary care centers in each of 7 cities in Spain.
Participants:
Two primary care physicians (PCPs) and 5236 nondepressed adult patients were randomly sampled from each center; 3326 patients consented and were eligible to participate.
Intervention:
For each patient, PCPs communicated individual risk for depression and personal predictors of risk and developed a psychosocial program tailored to prevent depression.
Measurements:
New cases of major depression, assessed every 6 months for 18 months.
Results:
At 18 months, 7.39% of patients in the intervention group (95% CI, 5.85% to 8.95%) developed major depression compared with 9.40% in the control (usual care) group (CI, 7.89% to 10.92%) (absolute difference, −2.01 percentage points [CI, −4.18 to 0.16 percentage points]; P = 0.070). Depression incidence was lower in the intervention centers in 5 cities and similar between intervention and control centers in 2 cities.
Limitation:
Potential self-selection bias due to nonconsenting patients.
Conclusion:
Compared with usual care, an intervention based on personal predictors of risk for depression implemented by PCPs provided a modest but nonsignificant reduction in the incidence of major depression. Additional study of this approach may be warranted.
Primary Funding Source:
Institute of Health Carlos III.
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Information & Authors
Information
Published In
Annals of Internal Medicine
Volume 164 • Number 10 • 17 May 2016
Pages: 656 - 665
History
Published online: 29 March 2016
Published in issue: 17 May 2016
Keywords
Copyright
© 2016 American College of Physicians.
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Intervention to Prevent Major Depression in Primary Care: A Cluster Randomized Trial. Ann Intern Med.2016;164:656-665. [Epub 29 March 2016]. doi:10.7326/M14-2653
Intervention to Prevent Major Depression in Primary Care: A Cluster Randomized Trial. Ann Intern Med.2016;164:656-665. [Epub 29 March 2016]. doi:10.7326/M14-2653
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