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Posttraumatic stress disorder (PTSD) can be triggered by life-threatening medical events such as strokes and transient ischemic attacks (TIAs). Little is known regarding how PTSD triggered by medical events affects patients' adherence to medications.

We surveyed 535 participants, age ≥40 years old, who had at least 1 stroke or TIA in the previous 5 years. PTSD was assessed using the PTSD Checklist-Specific for stroke; a score ≥50 on this scale is highly specific for PTSD diagnosis. Medication adherence was measured using the 8-item Morisky scale. Logistic regression was used to test whether PTSD after stroke/TIA was associated with increased risk of medication nonadherence. Covariates for adjusted analyses included sociodemographics, Charlson comorbidity index, modified Rankin Scale score, years since last stroke/TIA, and depression.

Eighteen percent of …