Antidepressant medication adherence: a study of primary care patients.

Background: Nonadherence to antidepressant medication significantly contributes to the undertreatment of depression in primary care populations. The purpose of this study was to survey primary care patients' adherence to antidepressant medication to better understand factors associated with nonadherence.

Method: Participants with a history of being prescribed an antidepressant for at least 4 weeks were recruited from a primary care research network.