PurposeTo quantitatively pool the overall prevalence of self-neglect in older adults and provide evidence-based information for healthcare professionals to develop preventive measures.MethodsSystematically and thoroughly searched ten databases from inception to September 1, 2024 and we pooled the prevalence of self-neglect in older adults using a random-effects model based on the Stata 15.0 software.ResultsIn our meta-analysis, 21 studies were included, and the estimated prevalence rate of self-neglect among older adults was 27% (95% CI: 23%-30%). We found that the incidence of self-neglect was higher in males, aged 80 years, developing countries, hospitals, and using the Elder Self-Neglect Questionnaire assessment tool.ConclusionSelf-neglect is a common and underestimated phenomenon in older adults, and the prevalence rate of self-neglect is high. Several epidemiological characteristics such as gender, age, countries, settings, and definition criteria were associated with its prevalence. It deserves early screening and targeted intervention by using a globally accepted definition of self-neglect to prevent older adults from self-neglect.Implications for nursing practiceOur study can provide clinical evidence for nursing staff and healthcare professionals to identify high-risk groups of self-neglect in older adults. (sic)(sic):(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic):(sic)(sic)Stata 15.0(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic),(sic)(sic)(sic)(sic)(sic)10(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)2024(sic)9(sic)1(sic).(sic)(sic):(sic)(sic)(sic)21(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)27% (95% CI: 23%-30%).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),80(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic),(sic)(sic),(sic)(sic)ESNQ(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic):(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic),(sic)(sic),(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic):(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).