(1) | (2) | (3) | (4) | |
---|---|---|---|---|
Unilateral | 0.526*** (0.0466) | 0.264*** (0.0241) | 0.323*** (0.0223) | 0.319*** (0.0260) |
Adjusted R2 | 0.146 | 0.865 | 0.937 | 0.952 |
Year effects | No | Yes, F = 38.49 | Yes, F = 3.36 | Yes, F = 4.69 |
Prob > F | 0.000 | 0.000 | 0.000 | |
State effects | No | Yes, F = 100.60 | Yes, F = 36.93 | Yes, F = 18.39 |
Prob > F | 0.000 | 0.000 | 0.000 | |
State trend, linear | No | No | Yes, F = 26.23 | Yes, F = 6.26 |
Prob > F | 0.000 | 0.000 | ||
State trend, quadratic | No | No | No | Yes, F = 7.14 |
Prob > F | 0.000 | |||
Total of observations | 736 | 736 | 736 | 736 |