Table 3 Baseline regression results.
From: Does the green patent pre-examination program reduce environmental pollution?
(1) | (2) | (3) | (4) | |
|---|---|---|---|---|
SO2 | SO2 | Dust | Dust | |
DID | −0.2226*** (−4.3164) | −0.2447*** (−4.5223) | −0.1874*** (−2.8371) | −0.2016*** (−2.9566) |
GDP | 0.0473 (0.5261) | −0.0804 (−0.7142) | ||
Gov | −0.0955** (−2.3171) | −0.1244** (−2.1766) | ||
Local | 0.3830 (1.3498) | 0.0428 (0.1399) | ||
Infra | 0.2291 (0.7734) | 0.2909 (0.8057) | ||
Indu2 | 0.3917 (0.8213) | 0.0816 (0.1769) | ||
Constant | 9.6259*** (1056.4385) | 8.8016*** (8.5001) | 9.4240*** (892.9369) | 10.2292*** (8.3269) |
Observations | 2550 | 2550 | 2550 | 2550 |
R-squared | 0.8935 | 0.8939 | 0.8324 | 0.8328 |
City FE | Yes | Yes | Yes | Yes |
Year FE | Yes | Yes | Yes | Yes |
