| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| F-statistic | 1.00 | 0.84 | 0.90 | 0.78 |
| p-value | 0.43 | 0.55 | 0.50 | 0.60 |
| Observations | 132,039 | 132,039 | 132,039 | 132,039 |
| Distance to cutoff | X | X | X | X |
| Child characteristics at birth | X | X | X | X |
| Parental characteristics, child at birth | X | X | X | X |
| Cohort fixed effects | X | X | ||
| Additional parental characteristics, child age 5 | X | X |
Notes: Table shows F-statistics and associated p-values from ordinary least squares (OLS) regressions. Columns 1 and 2 show results of a regression of birth month (January = 1) on distance to cutoff (in days), background characteristics of focal child and parents, and cohort fixed effects, whereas Columns 3 and 4 show results when additional parental characteristics at age five are added (marriage/cohabitation and maternal employment). Full set of estimation results are presented in Online Appendix Table A3.