Prevalence and correlates of gambling problems among forensic psychiatric patients: evidence of elevated rates from a multi-site study

Introduction Gambling problems (GP) remain underexplored among forensic psychiatric patients (FPPs). Given the associations between GP, mental distress, and criminal behavior, it is imperative to investigate GP in this population. Aims This study aimed to estimate the prevalence of gambling and GP among FPPs in Denmark and explore associations between GP and sociodemographic, behavioral, and clinical variables. Methods A cross-sectional survey was conducted, including 214 FPPs across 19 hospital units in two major Danish Health Regions. The primary measures were past-year gambling and GP assessed via the Problem Gambling Severity Index (PGSI). Secondary measures included gambling behavior (e.g., expenditure, frequency, self-exclusion), sociodemographic (e.g., age, gender, educational attainment), financial (e.g., consumer loans, monetary savings), and clinical variables (e.g., length of stay, psychiatric diagnoses). Gambling FPPs were asked if they had felt compelled to commit crime due to gambling during the past 12 months. Correlates of GP were identified by comparing higher-risk (PGSI ≥ 3) to lower-risk (PGSI ≤2) gambling FPPs. Prevalence was compared to a gender- and age-matched normative sample from a recent Danish national gambling survey. Results The prevalence of past-year gambling among FPPs was 46% (95% CI = 39-53%), while the prevalence of severe GP (PGSI ≥ 8, indicative of gambling disorder) was 12% (95% CI: 8.1-17%). Relative to lower-risk gambling FPPs (PGSI ≤2), higher-risk FPPs (PGSI ≥ 3) were more likely to be male, to express poorer financial conditions, and to have felt compelled to engage in criminal behavior due to gambling. GP prevalence was markedly higher among FPPs than in the normative sample, where 1.8% reported severe GP (PGSI ≥ 8) (95% CI: 1.3-2.5%). Discussion and Conclusion To our knowledge, this is the first study to examine the prevalence of gambling and GP among FPPs, and the rates were considerable. Given the consequences that GP may have on FPP health and economy, and thus recovery, our findings underscore the potential benefits of screening for and addressing GP in forensic psychiatric care. There is a strong need for further research to inform tailored interventions, improve treatment, and mitigate the potential impact of gambling on recidivism risk.