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. Author manuscript; available in PMC: 2015 Feb 19.
Published in final edited form as: Educ Econ. 2012 Jul;20(3):233–259. doi: 10.1080/09645292.2012.672792

Table 7.

a Estimated Impacts on Monthly Income in Pesos Subgroup: Boys, Age 12–20 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
12–14 .3 82 53 −66 (35) −47 (46) −49 (27) −45 (39) 97 96 909 800
15–18 .3 454 452 32 (119) 183 (168) 12 (75) 65 (101) 95 96 435 369
19–20 .3 1151 1109 −537 (401) −289 (489) −128 (187) −162 (226) 96 94 83 65
6–20 .3 261 239 −67 (50) 8 (63) −36(31) −19 (41) 96 96 1427 1234
b Estimated Impacts on Monthly Income in Pesos Subgroup: Girls, Age 12–20 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
12–14 .3 77 30 3 (28) 3 (33) −5 (22) −7 (30) 97 97 871 775
15–18 .3 243 172 −100 (75) −36 (77) −53 (53) −13 (65) 96 97 534 431
19–20 .3 349 274 4 (115) 121 (452) 25 (107) 33 (201) 96 96 106 88
6–20 .3 157 99 −34 (32) −2 (45) −20 (25) −6 (32) 96 97 1511 1294

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