(1) | (2) | (3) | (4) | |
---|---|---|---|---|
Treatment | Duration | Area | Intensity | |
Year | -0.0641*** (-4.78) | -0.0468*** (-3.62) | 0.0169 (1.53) | -0.0168 (-1.41) |
Treatment | -0.0474*** (-3.11) | |||
Year x Treatment | 0.175*** (10.40) | |||
Duration | -0.00943*** (-2.89) | |||
Year x Duration | 0.0344*** (9.48) | |||
Area | -0.000902** (-2.37) | |||
Year x Area | 0.00192*** (4.60) | |||
Intensity | -0.0825*** (-3.46) | |||
Year x Intensity | 0.207*** (8.06) | |||
Gender (male) | 0.248*** (21.72) | 0.248*** (21.75) | 0.248*** (21.63) | 0.248*** (21.69) |
Age (years) | 0.0306*** (10.15) | 0.0307*** (10.17) | 0.0307*** (10.13) | 0.0306*** (10.13) |
Age squared | -0.000530*** (-12.41) | -0.000531*** (-12.42) | -0.000530*** (-12.36) | -0.000530*** (-12.38) |
Married | -0.00445 (-0.18) | -0.00572 (-0.23) | -0.00674 (-0.28) | -0.00504 (-0.21) |
Hui nationality | 0.0175 (1.35) | 0.0170 (1.32) | 0.0144 (1.10) | 0.0143 (1.10) |
Primary education & below | 0.0337 (1.51) | 0.0344 (1.54) | 0.0325 (1.44) | 0.0343 (1.53) |
Junior middle school | 0.132*** (6.23) | 0.133*** (6.26) | 0.133*** (6.27) | 0.134*** (6.29) |
Number of children under 15 | -0.0117** (-2.08) | -0.0118** (-2.08) | -0.0110* (-1.91) | -0.0111* (-1.95) |
Number of elderly | -0.0323** (-2.13) | -0.0324** (-2.15) | -0.0342** (-2.23) | -0.0327** (-2.13) |
Number of adults | 0.0183*** (2.91) | 0.0184*** (2.91) | 0.0192*** (3.02) | 0.0194*** (3.05) |
Land per adult | -0.000644* (-1.71) | -0.000723* (-1.90) | -0.000961** (-2.50) | -0.000841** (-2.20) |
% of migrants in the village labor force | 0.00648*** (9.58) | 0.00640*** (9.45) | 0.00608*** (8.77) | 0.00616*** (9.06) |
Lowest distance to the county center | -0.000456* (-1.74) | -0.000428 (-1.63) | -0.000294 (-1.14) | -0.000342 (-1.30) |
Constant | -0.457*** (-9.13) | -0.460*** (-9.22) | -0.470*** (-9.36) | -0.461*** (-9.17) |
N | 5,316 | 5,316 | 5,308 | 5,316 |
R 2 | 0.221 | 0.219 | 0.211 | 0.215 |