Table 1. Contributions to the educational differences in QALE at age 25.

Year	Difference between elementary school and middle school			Difference between elementary school and high school			Difference between elementary school and college
	Due to probability of death	Due to HRQOL	Sum	Due to probability of death	Due to HRQOL	Sum	Due to probability of death	Due to HRQOL	Sum
2005	5.95 yr (76.5)	1.83 yr (23.5)	7.78 yr (100.0)	12.24 yr (79.7)	3.12 yr (20.3)	15.36 yr (100.0)	13.82 yr (79.8)	3.50 yr (20.2)	17.32 yr (100.0)
2010	0.70 yr (34.9)	1.30 yr (65.1)	2.00 yr (100.0)	1.98 yr (48.9)	2.07 yr (51.1)	4.05 yr (100.0)	3.55 yr (53.4)	3.09 yr (46.6)	6.64 yr (100.0)

Data are shown as number (%).

QALE = quality-adjusted life expectancy, HRQOL = health-releated quality of life.