关键词: 高龄老人, 老化率, 老化速度, 虚弱指数

Abstract: Based on estimating the rate of ageing by calculating the change of frailty index of the Chinese oldest-old over time,this study concludes that the density distribution of rate of ageing looks like a cone with high proportion of samples converging the mean rate of ageing while the mean rates of ageing for the elderly at different ages are nearly the same,almost 2%-2.5% per year.The regression results show that all of the regression models of both early and present variables can explain at most 16% of the change of individual rate of ageing,which indirectly means that both the early experience and present status are not the main determinants of individual rate of ageing.Moreover,doing regular exercise both in early life and in present life,the adequacy of medical service if seriously ill and sufficiency of financial support for daily costs are helpful for the elderly to slow the rate of ageing,while most postulated determinants of rate of ageing are not tested statistically significantly in this study,including the birth place,current residcence,marriage times,availability of medical service both at around age 60 and in childhood,and experience of hunger in childhood.

Keywords: The Oldest Old, Rate of Ageing, Speed of Ageing, Frailty Index