Table A1.

t Tests for Propensity and Covariate Partitioning Results

		(a)	(b)
Propensity score	(a) Low
	(b) Mid	−2.41
	(c) High	−3.12	2.41
Parental income	(a) Low
	(b) Mid	−1.81
	(c) High	−3.36	−1.87
Mothers’ education	(a) Less than high school
	(b) High school	−3.32
	(c) College or higher	−3.06	.36
Ability	(a) Low
	(b) Mid	−2.46
	(c) High	−2.91	−.04
Race	(a) Black
	(b) Hispanic	.40
	(c) White	−1.36	−1.97

Note: Data are from the National Longitudinal Survey of Youth 1979 cohort. The sample is restricted to individuals who were 14 to 17 years old at the baseline survey in 1979 (n = 5,582), who had completed at least the 12th grade (n = 4,548), and who had no missing data on the outcome (n = 4,382). College completion is measured as a 4-year degree completed by age 25. Cells indicate unequal-variances t-test values for tests of difference between each of the pairs of subgroup effects.