Table 7 Change the research sample.
From: Does the green patent pre-examination program reduce environmental pollution?
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | |
|---|---|---|---|---|---|---|---|---|
SO2 | Dust | SO2 | Dust | SO2 | Dust | SO2 | Dust | |
DID | −0.1808*** (−3.2681) | −0.1328* (−1.8795) | −0.2635*** (−3.8476) | 0.0429 (0.5133) | −0.2254*** (−2.8149) | −0.5133*** (−5.5825) | −0.0893 (−0.8882) | −0.0456 (−0.3515) |
Constant | 8.6873*** (8.5598) | 10.3882*** (8.3676) | 8.3487*** (7.8259) | 10.2014*** (8.1537) | 8.5383*** (8.0670) | 9.5057*** (7.8236) | 7.9531*** (7.4480) | 9.5402*** (7.5336) |
Observations | 2790 | 2790 | 2440 | 2440 | 2430 | 2430 | 2560 | 2560 |
R-squared | 0.8899 | 0.8234 | 0.8911 | 0.8246 | 0.8916 | 0.8310 | 0.8848 | 0.8124 |
Controls | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
City FE | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Year FE | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
