Table 7 Robustness test.
From: Study on the impact of new quality productive forces on agricultural green production efficiency
Variable | (1) | (2) | (3) | (4) | (5) | (6) |
|---|---|---|---|---|---|---|
Principal component analysis | Winsorization | Lagged effects | Omitted the 2020 data | Sensitivity tests | Instrumental variable method | |
Nqpf | 0.077*** | 0.469*** | - | 0.443*** | 0.442*** | 0.422* |
(0.015) | (0.104) | - | (0.113) | (0.104) | (0.255) | |
L.Nqpf | - | - | 0.459*** | - | - | - |
- | - | (0.121) | - | - | - | |
Fiscal | -0.539** | -0.268 | -0.356 | -0.322 | -0.287 | -0.336 |
(0.259) | (0.262) | (0.269) | (0.269) | (0.265) | (0.342) | |
Ags | 0.394** | 0.463*** | 0.483*** | 0.479*** | 0.419** | 0.503* |
(0.163) | (0.170) | (0.177) | (0.172) | (0.170) | (0.279) | |
Aia | 0.298* | 0.216 | 0.168 | 0.216 | 0.240 | 0.175 |
(0.166) | (0.170) | (0.173) | (0.171) | (0.168) | (0.232) | |
Urban | -0.848*** | -0.575*** | -0.681*** | -0.618*** | -0.650*** | -0.702 |
(0.220) | (0.205) | (0.224) | (0.217) | (0.213) | (0.661) | |
Open | -2.045*** | -1.740*** | -1.947*** | -1.792*** | -1.757*** | -1.862 |
(0.486) | (0.508) | (0.515) | (0.506) | (0.505) | (1.965) | |
Econ | 0.157*** | 0.198*** | 0.181*** | 0.189*** | 0.179*** | 0.180*** |
(0.019) | (0.022) | (0.021) | (0.022) | (0.021) | (0.0537) | |
Indus | -0.334*** | -0.374*** | -0.329*** | -0.397*** | -0.362*** | -0.329 |
(0.091) | (0.092) | (0.094) | (0.096) | (0.092) | (0.246) | |
Constant | 0.720*** | 0.554*** | 0.611*** | 0.590*** | 0.630*** | - |
(0.158) | (0.164) | (0.170) | (0.167) | (0.164) | - | |
LM statistics | - | - | - | - | - | 5.984** |
- | - | - | - | - | (0.014) | |
Cragg-Donald Wald F statistics | - | - | - | - | - | 3279.630 |
- | - | - | - | - | (16.380) | |
Year effect | YES | YES | YES | YES | YES | YES |
City effect | YES | YES | YES | YES | YES | YES |
Observation | 378 | 378 | 360 | 360 | 378 | 360 |
R-squared | 0.869 | 0.868 | 0.866 | 0.859 | 0.865 | 0.811 |
