Forensic mental health research: The potential of Danish national registers

Forensic psychiatric research faces persistent methodological and ethical challenges, limiting the development of robust evidence to inform practice and policy. This article examines these barriers in the Danish context, highlighting the underutilized potential of national register data to overcome current limitations. Despite Denmark having a relatively large forensic psychiatric patient population and comprehensive national health registers, critical obstacles remain, including inconsistent patient identifiers, fragmented service delivery, and restrictive ethical frameworks that impede patient inclusion in research. The authors argue for greater methodological rigor, improved identification strategies, and clearer ethical guidelines, proposing that leveraging existing register-based data could significantly enhance the scope and quality of forensic mental health research. Addressing these barriers would help fill crucial knowledge gaps and support more evidence-based interventions for this vulnerable population.