Table 2.

Mean (SD) Rates that New Individual Chronic Conditions Accumulate

Age (y)	New Chronic Diseases Per Year
	HRS		REP		WHIOS
	Primary	Secondary	Primary	Secondary	Primary	Secondary
65–69
Women	0.14 (0.17)	0.17 (0.21)	0.26 (0.30)	0.31 (0.39)	0.16 (0.17)	0.19 (0.21)
Men	0.15 (0.18)	0.19 (0.21)	0.29 (0.30)	0.33 (0.43)	NA	NA
70–74
Women	0.13 (0.16)	0.18 (0.19)	0.33 (0.34)	0.39 (0.45)	0.18 (0.18)	0.22 (0.24)
Men	0.19 (0.22)	0.19 (0.22)	0.36 (0.37)	0.40 (0.47)	NA	NA
75–79
Women	0.17 (0.21)	0.25 (0.25)	0.42 (0.43)	0.45 (0.45)	0.20 (0.20)	0.24 (0.25)
Men	0.24 (0.22)	0.24 (0.24)	0.47 (0.46)	0.48 (0.50)	NA	NA

Note: HRS = Health and Retirement Study; NA = not applicable; REP = Rochester Epidemiology Project; WHIOS = Women’s Health Initiative Observational Study.