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Trends in assisted dying among patients with psychiatric disorders and dementia in Belgium: A health registry study

par Jacques, Wels ;Hamarat, Natasia
Référence PLoS medicine, 22, 11, page (e1004522)
Publication Publié, 2025-11-01

Article révisé par les pairs

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Background Assisted dying and euthanasia (ADE) for patients with psychiatric disorders or dementia have increased in jurisdictions where the practice is legal. In this study, we examine trends in euthanasia cases involving patients with these conditions in Belgium, where the law makes a distinction based on whether a patient’s death is not expected in the foreseeable future (>12 months)—a common situation in cases of dementia or psychiatric disorders. Methods and findings We use data on all cases of euthanasia reported to the Federal Commission for the Control and Evaluation of Euthanasia from 2002 (when the legislation was introduced) to 2023 ( N  = 33,592). Psychiatric disorders and dementia represent 1.27% and 0.92% of all cases, respectively. Using time-series zero-inflated negative binomial regression, we model trends by first examining interactions between euthanasia reasons and year, then extending to three-way interactions with patients’ characteristics. The model calculates change in count and is replicated with an offset to account for demographic changes and generate rates. Our results show that euthanasia for psychiatric disorders and dementia showed distinct trends over time. Although slightly increasing, euthanasia for psychiatric disorders followed trends similar to the other types of euthanasia (count = 1.00 [95%CI: 0.98; 1.03]—rate = 1.02 [95%CI: 0.99; 1.04]), while euthanasia cases for dementia increased faster than other types of euthanasia (count = 1.03 [95%CI: 1.00; 1.06]—rate = 1.04 [95%CI: 1.01;1.07]). Trends in euthanasia for dementia and psychiatric disorders coincide with demographic changes. While euthanasia rates for psychiatric disorders were initially higher among women, the rate among men has been increasing over time. Regional trends show higher overall euthanasia rates in the Dutch-speaking population, but with faster increases in the French-speaking population. A key limitation of this study is the lack of information on patients’ socio-economic profiles. Conclusions In Belgium, between 2002 and 2023, there are distinct trends for euthanasia for non-terminal illnesses. Euthanasia for psychiatric disorders followed similar trends as euthanasia for terminal illnesses, whereas euthanasia cases involving cognitive conditions increased at a faster rate. Furthermore, there were gender and regional differences, which diminished over time.