| 东部地区 | 中部地区 | 西部地区 |
| wpollution | wpollution | wpollution |
lnpublic1 | 0.0162*** | 0.0141 | 0.00284 |
| (2.81) | (1.57) | (0.50) |
lnpublic2 | −0.0202 | 0.00582 | −0.0324** |
| (−0.75) | (0.19) | (−2.32) |
lnpublic3 | −0.0140 | −0.0216 | 0.00188 |
| (−0.49) | (−0.95) | (0.16) |
lnSewageRate | −0.0307 | −0.0780 | −0.00174 |
| (−0.38) | (−1.06) | (−0.04) |
lnlaw | 0.00349 | −0.0127 | −0.00986 |
| (0.23) | (−0.91) | (−0.87) |
lncase | −0.00379 | 0.000191 | −0.0294** |
| (−0.37) | (0.02) | (−2.21) |
lnwproject | −0.00216 | 0.00150 | 0.00142 |
| (−0.25) | (0.12) | (0.15) |
lnGRP | 0.0955* | 0.0924 | 0.0824 |
| (1.89) | (1.40) | (1.58) |
lninvest | −0.00936 | 0.00210 | 0.0130 |
| (−0.19) | (0.03) | (0.22) |
lnexpend | 0.0249 | 0.0382 | 0.0134 |
| (1.30) | (0.92) | (0.42) |
proportion | −0.0448 | −0.0365 | −0.0233 |
| (−1.12) | (−0.84) | (−0.69) |
lneducation | −0.125** | −0.0340 | −0.104** |
| (−2.14) | (−0.44) | (−2.54) |
lnUrbanRate | 0.0374 | 0.0267 | 0.109* |
| (0.45) | (0.21) | (1.71) |
_cons | 0.510 | −0.148 | 0.225 |
| (1.03) | (−0.20) | (0.53) |
N | 132 | 99 | 99 |