TABLE 3.

—Total Life and Driving Life Expectancies of Drivers, by Age and Sex: Asset and Health Dynamics Among the Oldest Old Study, 1993–1995

Age Group, y	Mean Yearsa	nqxb	lx	dx	Lx	exc (SE)
Men’s total life expectancy
70–74	1.00	0.0476	100 000	4757	488 109	17.7 (0.57)
75–79	1.00	0.1037	95 243	9878	451 522	13.5 (0.50)
80–84	1.00	0.1409	85 366	12 026	396 764	9.8 (0.69)
≥ 85	1.00	1.0000	73 340	73 340	438 082	6.0 (1.01)
Men’s driving life expectancy
70–74	1.90	0.1194	100 000	11 938	445 649	11.5 (0.10)
75–79	1.78	0.2086	88 062	18 365	351 831	8.0 (0.10)
80–84	1.69	0.2882	69 697	20 089	252 105	5.0 (0.07)
≥ 85	1.57	1.000	49 607	49 607	97 685	2.0 (0.10)
Women’s total life expectancy
70–74	1.00	0.0318	100 000	3178	492 054	20.6 (3.84)
75–79	1.00	0.0720	96 822	6973	466 675	16.2 (4.11)
80–84	1.00	0.0585	89 848	5254	436 105	12.2 (4.87)
≥ 85	1.00	1.0000	84 594	85 594	664 155	7.9 (5.41)
Women’s driving life expectancy
70–74	1.89	0.1440	100 000	14 400	438 390	11.2 (0.17)
75–79	1.79	0.2144	85 600	18 354	341 626	7.9 (0.07)
80–84	1.73	0.2825	67 245	19 000	250 198	5.0 (0.04)
≥ 85	1.54	1.0000	48 245	48 245	85 467	1.8 (0.09)

Note. l_x = number in the hypothetical population; d_x = number of events (based on _nq_x) in the hypothetical population; L_x = number of person-years of survival in the hypothetical population.

^aMean years of survival for those dying within the 2-year period of follow-up in the total life expectancy calculations and mean years of driving for the driving life expectancy calculations, with assignments of 0.5 year for those dying, 1.0 year for those who quit, and 1.85 years for those who refused to participate or were lost in the follow-up.

^bRepresents the mortality rate in total life expectancy calculations and represents the combined mortality, driving cessation, and loss to follow-up rate in the driving life expectancy calculations.

^cExpected years and the SE of the estimated expected years.