While serious concerns are often raised when patients abscond or leave unauthorized from psychiatric services, there is limited knowledge about absconsion in forensic psychiatric services. Following the preferred reporting items for systematic reviews and meta-analyses guideline, we searched Medline/PubMed, PsycINFO, EMBASE, CINAHL, Scopus, and Web of Science through May 2020 for eligible reports on absconsion in forensic patients with no language limits. The search string combined terms for absconsion, forensic patients, and psychiatry in various permutations. This was supplemented by snowball searching for additional studies. Of the 565 articles screened, 25 eligible studies, including two interventional, seven cross-sectional, and 16 case-controlled studies spanning five decades were included. Absconsion and re-absconsion rates ranged from 0.2% to 54.4% and 15% to 71%, respectively, albeit higher rates trended with less secure psychiatric units. Previous absconsion, aggression, substance use, high Historical Clinical Risk Management-20 score, anti-sociality, psychiatric symptoms, sexual offending, and poor treatment adherence were the factors reported with a degree of predictive value for absconsion. However, the construct of absconsion was heterogeneous in the included studies and the quality of evidence on the predictors of absconsion was limited. Serious risky behaviors including re-offending, violence, self-harm, suicide, rape, and manslaughter were perpetrated by patients during unauthorized leave. Nevertheless, the rates of re-offending were generally low in the included studies (highest recidivism rate = 0.11). There is need for standardized assessment and documentation of absconsion to improve risk analysis and management. Furthermore, it is necessary to develop a structured guideline for defining absconsion, and to create a protocol that operationalizes all absconsion-related behaviors/events to promote reliable assessment and comparative analysis in future studies.

Background: Adverse consequences following elopement among older people with dementia have been widely reported but the phenomenon of elopement has been under-researched. This study aimed to examine patterns of elopement incidents, search processes and subsequent prevention strategies and to explore factors that predict elopement among community-dwellers with dementia.

Methods: Twenty subjects with a recent history of elopement and 25 subjects without any history of elopement completed the study. Their cognitive status, dementia severity and behavioral manifestations were evaluated. Family informants were interviewed to gather data on demographic characteristics, clinical conditions, caring patterns, lifestyle, history of elopement, and information about any elopement incidents.

Results: Two-thirds of subjects had moderate severity of dementia (Clinical Dementia Rating ≥2). The elopers did not differ from the non-elopers in demographics, caring arrangements, clinical conditions or lifestyle patterns. Eighty percent of eloped subjects had a prior history of elopement. Logistic regression analyses suggested that manifestation of behavioral symptoms predicted elopement (OR = 1.410). Analysis of the 68 elopement incidents revealed that the vast majority of family caregivers failed to recognize any emotional/behavioral clues prior to elopement. Immediate and multiple search strategies were adopted, with eloped subjects mostly found near the point last seen. Yet, subsequent preventive strategies adopted were largely conventional.

Conclusion: Although elopement is difficult to predict, there is a need to enhance and sensitize caregivers’ understanding of elopement as related to dementia and more effective preventive strategies. Public education on dementia could also serve to engage lay people more effectively in the search process of eloped persons with dementia.