Hosseini, Roozbeh; Kopecky, Karen A.; Zhao, Kai - 2019
We construct a unified objective measure of health status: the frailty index, defined as the cumulative sum of all … adverse health indicators observed for an individual. First, we show that the frailty index has several advantages over self …-reported health status, particularly when studying health dynamics. Then we estimate a stochastic process for frailty dynamics over …