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Receiver operating characteristic (ROC) curve analysis was then applied to identify the optimal age cutoff points to distinguish those age groups. Methods: Data were collected on the demographics of older patients, their medical and medication histories, dependence on activities of daily living (ADLs), and instrumental activities of daily living (IADLs). Non-parametric tests (Kruskal\u2013Wallis and Mann\u2013Whitney U tests) and ROC curves were used for statistical analysis. Results: The 65\u201379 and \u226580 years of age groups showed distinct frailty status, comorbidity, and dependency in ADLs. The median age to remain completely independent in IADLs was 76\u201379 years, while the median age for being free from geriatric syndromes was slightly higher (77\u201380 years) and reached 82 years for the absence of delirium, falls, and swallowing problems. In the ROC analysis, the optimal cutoff ages for the presence of frailty, cognitive impairment, and dependency in ADLs were 80\u201382 years. Conclusion: The 65\u201379 and \u226580 years of age groups differed significantly in numerous parameters, underscoring the need to address these distinct age groups differently, both for applying medical therapies and interventions, as well as for conducting health research. <\/jats:p>","DOI":"10.4235\/agmr.23.0177","type":"journal-article","created":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T06:47:30Z","timestamp":1705474050000},"page":"65-75","update-policy":"https:\/\/doi.org\/10.4235\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Does Old Age Comprise Distinct Subphases? 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