TY - JOUR A1 - Crimmins, E. M. A1 - Hayward, M. D. A1 - Saito, Y. T1 - Changing mortality and morbidity rates and the health status and life expectancy of the older population Y1 - 1994 DO - 10.2307/2061913 JF - Demography VL - 31 SP - 159 EP - -175 ER -