Table 3.

a Estimated Impacts on Percentage Enrolled in School Subgroup: Boys, Age 6–20 Local Linear matching†
Age in 2002	BW	Avg Trt in 2002	Avg Con in 2002	1 Year DID Match	2 Year DID Match	1 Year DID	2 Year DID	% Obs in Support~	%Obs in Support~~	1 Year Obs T+C	2 Year Obs T+C
6–7	.3	84	90	4.7 (2.6)	4.6 (2.8)	5.1 (2.3)	4.7 (2.6)	97	97	859	771
8–11	.3	95	98	2.4 (0.9)	2.2 (1.1)	2.3 (0.9)	2.4 (1.1)	97	97	1947	1753
12–14	.3	93	90	1.3 (2.0)	−3.0 (3.1)	1.4 (1.8)	−1.8 (2.6)	97	97	1038	947
15–18	.3	60	53	8.5 (4.1)	2.6 (4.8)	5.6 (3.4)	3.8 (4.1)	96	96	614	523
19–20	.3	22	13	10.2 (9.3)	−4.1 (8.1)	3.7 (5.1)	−4.9 (5.5)	96	97	146	120
6–20	.3	85	86	3.6 (1.0)	1.2 (1.2)	3.1 (0.8)	1.7 (1.0)	97	97	4604	4114

b Estimated Impacts on Percentage Enrolled in School Subgroup: Girls, Age 6–20 Local Linear matching†
Age in 2002	BW	Avg Trt in 2002	Avg Con in 2002	1 Year DID Match	2 Year DID Match	1 Year DID	2 Year DID	% Obs in Support~	%Obs in Support~~	1 Year Obs T+C	2 Year Obs T+C
6–7	.3	84	92	6.0 (2.6)	7.6 (2.5)	6.9 (2.1)	9.1 (2.2)	97	97	927	835
8–11	.3	96	98	1.7 (0.9)	2.4 (1.4)	2.0 (0.8)	1.9 (1.2)	97	97	1989	1796
12–14	.3	88	92	1.0 (2.5)	0.1 (3.3)	4.1 (1.9)	3.6 (2.7)	97	97	972	860
15–18	.3	58	61	3.1 (4.7)	1.2 (6.2)	2.6 (3.8)	4.8 (4.6)	97	97	609	486
19–20	.3	13	22	8.2 (7.7)	−2.1 (10.1)	4.7 (6.2)	−1.4 (6.6)	97	95	129	103
6–20	.3	84	89	2.8 (1.1)	2.7 (1.3)	3.6 (0.8)	4.0 (1.1)	97	97	4626	4080

^†Difference-in-Difference estimator, imposing common support (2% trimming)

Standard errors based on bootstrap with 500 replications

^~Percentage of observations in the support region for 1-year estimations

^~~Percentage of observations in the support region for 2-year estimations

^†Difference-in-Difference estimator, imposing common support (2% trimming)

Standard errors based on bootstrap with 500 replications

^~Percentage of observations in the support region for 1-year estimations

^~~Percentage of observations in the support region for 2-year estimations