Table 2.
| a Estimated Impacts on Years of Schooling 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 | 0.69 | 0.90 | 0.04 (0.04) | −.03 (0.06) | 0.06 (0.04) | 0.02 (0.04) | 97 | 97 | 843 | 753 |
| 8–11 | .3 | 3.08 | 3.44 | 0.11 (0.02) | 0.05 (0.03) | 0.11 (0.02) | 0.06 (0.03) | 97 | 97 | 1884 | 1712 |
| 12–14 | .3 | 5.78 | 6.49 | 0.17 (0.03) | 0.25 (0.05) | 0.17 (0.03) | 0.23 (0.05) | 97 | 97 | 1003 | 901 |
| 15–18 | .3 | 7.60 | 7.67 | 0.13 (0.04) | 0.28 (0.09) | 0.11 (0.04) | 0.22 (0.08) | 96 | 95 | 595 | 477 |
| 19–20 | .3 | 7.81 | 8.01 | 0.04 (0.06) | 0.06 (0.17) | 0.03 (0.04) | −0.06 (0.10) | 96 | 96 | 145 | 106 |
| 6–20 | .3 | 4.09 | 4.25 | 0.11 (0.02) | 0.11 (0.03) | 0.12 (0.01) | 0.11 (0.02) | 97 | 97 | 4470 | 3949 |
| b Estimated Impacts on Years of Schooling 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 | 0.73 | 0.88 | 0.10 (0.04) | 0.08 (0.04) | 0.11 (0.03) | 0.09 (0.04) | 97 | 97 | 900 | 812 |
| 8–11 | .3 | 3.11 | 3.50 | 0.12 (0.02) | 0.12 (0.03) | 0.13 (0.02) | 0.13 (0.03) | 97 | 97 | 1930 | 1744 |
| 12–14 | .3 | 5.87 | 6.48 | 0.14 (0.04) | 0.17 (0.06) | 0.14 (0.03) | 0.15 (0.05) | 97 | 97 | 947 | 821 |
| 15–18 | .3 | 7.54 | 8.19 | 0.07 (0.05) | 0.19 (0.10) | 0.05 (0.04) | 0.16 (0.08) | 96 | 97 | 583 | 446 |
| 19–20 | .3 | 7.00 | 8.26 | 0.00 (0.08) | −.06 (0.19) | −.01 (0.05) | 0.01 (0.11) | 97 | 96 | 129 | 93 |
| 6–20 | .3 | 3.98 | 4.29 | 0.11 (0.02) | 0.13 (0.02) | 0.11 (0.01) | 0.13 (0.02) | 97 | 97 | 4489 | 3916 |
†
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