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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: J Health Econ. 2014 Mar 21;36:33–46. doi: 10.1016/j.jhealeco.2014.03.004

Table 4.

Diff-and-Diff estimates of the effect of the false ID laws with scanner provisions on the average number of drinks consumed per day: Robustness checks

(1) (2) (3) (4) (5) (6)
Treat −0.108 (0.034)*** −0.090 (0.042)** −0.074 (0.038)* −0.109 (0.033)*** −0.126 (0.040)*** −0.127 (0.036)***
R2 0.051 0.052 0.052 0.053 0.052 0.051
N 39542 36873 36549 35059 38055 36381
Excluded treatment states NY NY AZ CT NC
OR TX OH PA
WV

Notes: All regressions include individual characteristics, state level controls, state, month, and year fixed effects. Standard errors, corrected for clustering at the state level, are reported in parentheses. The signs *, **, and *** denote statistical significance at the 10, 5, and 1 percent significance levels.