(1) | (2) | (3) | (4) | |
---|---|---|---|---|
Unilateral | ||||
First 2 years | 0.427*** (0.104) | 0.287*** (0.0351) | 0.301*** (0.0348) | 0.247*** (0.0376) |
Years 3 and 4 | 0.535*** (0.109) | 0.401*** (0.0383) | 0.400*** (0.0475) | 0.245*** (0.0631) |
5 years or more | 0.614*** (0.172) | 0.277*** (0.0609) | 0.294*** (0.0878) | 0.0708 (0.112) |
Adjusted R2 | 0.115 | 0.933 | 0.967 | 0.974 |
Year effects | No | Yes, F = 13.94 | Yes, F = 1.64 | Yes, F = 2.07 |
Prob > F | 0.000 | 0.093 | 0.027 | |
State effects | No | Yes, F = 133.1 | Yes, F = 102.7 | Yes, F = 70.44 |
Prob > F | 0.000 | 0.000 | 0.000 | |
State trend, linear | No | No | Yes, F = 11.20 | Yes, F = 3.28 |
Prob > F | 0.000 | 0.000 | ||
State trend, quadratic | No | No | No | Yes, F = 3.64 |
Prob > F | 0.000 | |||
Equality of coefficients | F = 0.54 | F = 4.30 | F = 5.90 | F = 2.74 |
Prob > F | 0.581 | 0.014 | 0.003 | 0.066 |
Total of observations | 352 | 352 | 352 | 352 |