Abstract
This study aims to review the current literature regarding the association between suicide risk in patients aged 65 years or over with dementia residing in long-term care facilities (LTCs). We also evaluate the most common methods of suicide and protective versus risk factors of nursing home (NH) life on suicide behavior in patients with dementia. Following preferred reporting items for systematic reviews and Meta-Analyses (PRISMA) guidelines, we performed a systematic review of the relevant free full-text articles found in PubMed, Pub Psych, Cochrane library, and Science Direct up until April 4, 2022. Medical Subject Heading (MeSH) terms and keywords (nursing home, long-term care facility, suicide, self-injurious behavior, dementia), were used to search for full-text randomized clinical trials (RCTs), cross-sectional, case-control, cohort studies, systematic reviews, and studies published in the English language in the last 12 years, focused on human subjects 65 years and older were selected based on predefined eligibility criteria. The search yielded 57,909 articles, of which 12 studies met our inclusion criteria. The articles were subjected to quality appraisal by two reviewers. We used the Newcastle Ottawa scale (NOS) for quality assessment with a mean score of six for 12 observational studies used in this paper. Of the included reports, six were cross-sectional, five were cohort, and one was case-control. Four articles carefully examine the relationship between dementia and suicide, and all confirm the hypothesis that staying in LTCs reduces the risk of suicide in patients with dementia. However, the rest of the articles generally determine a higher risk of suicide in demented patients and describe male gender, non-Hispanic white race, younger age, newly diagnosed with dementia within one-year, mild dementia, comorbidities, depression, previous history of suicidal behavior, low social support and unstable family relationship as the risk factors of suicide in this population. In comparison, extended stay in NHs and other kinds of LTCs, severe dementia with impaired insight, older age, comorbid schizophrenia, physical disability with limitation and more difficulty preparing and executing a suicide plan, positive and robust social relationships, access to professional caregivers and high frequency of visits from relatives marked as the protective factors. Existing research on suicide risk in long-term care facility residents with dementia is limited. However, due to the increase in dementia rates that require people to reside in NHs and on the other hand, considering the multiple risk factors of suicide in the elderly living in such places, the need for a screening system for identifying people at suicide risk and performing preventive therapeutic and behavioral interventions is well felt.