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medRxiv PreprintsInternational1 November 2026

Violent victimisation in post-traumatic stress disorder: a Swedish register-based cohort study

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Background: Post-traumatic stress disorder (PTSD) is associated with various adverse outcomes, but links with subsequent violent victimisation are uncertain. Methods: We linked data from Swedish sociodemographic and medical registers to create a matched cohort of people with diagnosed PTSD and a comparison sample matched on birth year, sex, and county of residence in the year preceding diagnosis (or matching in the case of undiagnosed individuals). We calculated the cumulative incidence of violent victimisation (defined using ICD codes registered at hospitalisation) and conducted stratified Co
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