Socioeconomic, health, and social connectedness factors associated with self-rated health of octogenarians and nonagenarians in South Korea: urban and rural comparison

Characteristics associated with self-rated health differed significantly between octogenarians and nonagenarians in rural and urban areas. Public health strategies must support health-promoting behaviors such as regular walking, enhance oral health services, improve healthcare accessibility, reduce environmental stressors, and strengthen social support networks to promote health among octogenarians and nonagenarians.