Sociopsychological characteristics of late nonagenarians in Japan: the protocol of the Arakawa 95+ study.
Hidehito NiimuraYoko EguchiHisashi KidaKouta SuzukiMidori TakayamaMasaru MimuraPublished in: Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society (2019)
In the late nonagenarian population, the annual death rate was high, and care needs increased rapidly. However, some persons maintained the same care level or even showed improvement and successful ageing.