The results of PSM-DID
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| One-to-one | One-to-three | Radius | Kernel | |
| Variables | SO2 | SO2 | SO2 | SO2 |
| GPP | −0.1299*** (0.0439) | −0.1151*** (0.0339) | −0.0995** (0.0409) | −0.0995** (0.0407) |
| Constant | 11.7574*** (2.4339) | 12.5952*** (1.9351) | 13.0348*** (1.1087) | 13.2813*** (1.0979) |
| Observations | 13,286 | 26,925 | 59,798 | 59,674 |
| Adjusted R2 | 0.7761 | 0.7671 | 0.7854 | 0.7858 |
| Controls | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Firm FE | Yes | Yes | Yes | Yes |
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| One-to-one | One-to-three | Radius | Kernel | |
| Variables | SO2 | SO2 | SO2 | SO2 |
| GPP | −0.1299 | −0.1151 | −0.0995 | −0.0995 |
| Constant | 11.7574 | 12.5952 | 13.0348 | 13.2813 |
| Observations | 13,286 | 26,925 | 59,798 | 59,674 |
| Adjusted | 0.7761 | 0.7671 | 0.7854 | 0.7858 |
| Controls | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Firm FE | Yes | Yes | Yes | Yes |
*, **and ***, respectively, indicate that the significance is 10, 5 and 1%; the values in brackets are robust standard errors for clustering to industry-year
Sharing content requires targeting cookies to be enabled. Please update your cookie preferences to use this feature.