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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Econ Educ Rev. 2017 Oct 7;61:85–97. doi: 10.1016/j.econedurev.2017.10.001

Table 6.

Draft-lottery first stage statistics

Veteran Veteran Veteran × PGS
(1) (2) (3)
DRAFT 0.164***
(0.0464)		 0.165***
(0.0457)		 0.087*
(0.0470)
DRAFT × PGS 0.041
(0.0433)		 0.155**
(0.0652)
PGS −0.090***
(0.0269)		 0.253***
(0.0395)
Partial R2 0.028
Shea’s partial R2 0.016 0.020
F-Statistic 12.56 7.459 5.637
Minimum eigenvalue statistic 12.70 2.127
N 504 504 504

Notes: Column (1) reports first stage statistics from a model without the PGS and Columns (2)–(3) report first stage statistics from the interaction model with the PGS. “DRAFT” is equal to “1” if an individual was draft eligible and “0” otherwise. All regressions control for respondent month and year of birth; regression results in (2) and (3) include additional controls for population stratification in the genotype data. The F-statistic reported is the F-statistic for the joint significance of the instruments for the endogenous regressor in each first stage equation reported in Columns (1)– (3). Robust standard errors are in parentheses.

*

p<0.10,

**

p<0.05,

***

p<0.01.