| 解释变量 | 东部地区 | 中部地区 | 西部地区 |
| DIFI | 0.008941 | −0.041177 | −0.173964*** |
| (0.021814) | (0.028148) | (0.062488) | |
| LNURBAN | −1.547681*** | −2.482704*** | −3.219501*** |
| (0.097399) | (0.199275) | (0.185873) | |
| LNRGDP | 0.055433* | 0.208328*** | 0.223394*** |
| (0.029658) | (0.051007) | (0.082057) | |
| OPEN | 0.038111 | 0.50743 | 0.616213 |
| (0.075472) | (0.344617) | (0.414866) | |
| EDU | −0.021375 | −0.003299 | −0.007117 |
| (0.014363) | (0.012249) | (0.024982) | |
| IS | −0.025422 | −0.039847 | −0.861967 |
| (0.284645) | (0.273798) | (0.583606) | |
| LNFE | −0.009129 | 0.110426** | 0.200766*** |
| (0.025022) | (0.046368) | (0.066257) | |
| LNAFE | −0.075629*** | −0.002109 | −0.088892 |
| (0.0224) | (0.031676) | (0.071055) | |
| C | −0.290497 | −2.106059*** | −1.970831* |
| (0.452893) | (0.640866) | (1.036405) | |
| Individual fixed effects | No | Yes | No |
| Observations | 66 | 48 | 71 |
| R-squared | 0.912071 | 0.999081 | 0.960326 |