Table 4 Robustness test results (2).
From: Property rights governance and urban environmental pollution
PSM-DID | Control omitted variables | Lag1 | Excluding special samples | Replacing the tailing method | |
|---|---|---|---|---|---|
(1) | (2) | (3) | (4) | (5) | |
EP | EP | EP | EP | EP | |
IPR | −0.0182*** | −0.0183*** | −0.0228*** | −0.0123*** | |
(0.0049) | (0.0047) | (0.0047) | (0.0033) | ||
L.IPR | −0.0129** | ||||
(0.0052) | |||||
Omitted variables | NO | YES | NO | NO | NO |
Control variables | YES | YES | YES | YES | YES |
Year FE | YES | YES | YES | YES | YES |
City FE | YES | YES | YES | YES | YES |
Constant | 0.0580** | −0.0541* | 0.0432*** | 0.0438*** | 0.0530*** |
(0.0295) | (0.0288) | (0.0143) | (0.0134) | (0.0104) | |
N | 2200 | 3672 | 3313 | 3267 | 3680 |
Adj. R2 | 0.7606 | 0.7464 | 0.7434 | 0.7461 | 0.7678 |
