(1) | (2) | (3) | (4) | |
---|---|---|---|---|
Unilateral | 0.359*** (0.0927) | 0.190*** (0.0388) | 0.182*** (0.0397) | 0.148*** (0.0442) |
Adjusted R2 | 0.038 | 0.911 | 0.961 | 0.968 |
Year effects | No | Yes, F = 11.30 | Yes, F = 1.34 | Yes, F = 1.64 |
Prob > F | 0.000 | 0.208 | 0.094 | |
State effects | No | Yes, F = 108.4 | Yes, F = 106.8 | Yes, F = 71.79 |
Prob > F | 0.000 | 0.000 | 0.000 | |
State trend, linear | No | No | Yes, F = 13.71 | Yes, F = 3.41 |
Prob > F | 0.000 | 0.000 | ||
State trend, quadratic | No | No | No | Yes, F = 2.87 |
Prob > F | 0.000 | |||
Total of observations | 352 | 352 | 352 | 352 |