变量 | (1) | (2) | (3) |
lncases | −0.0174 | −0.0673*** | −0.3962*** |
| (0.0149) | (0.0126) | (0.0570) |
lnw | 0.2255*** | 0.1454*** | 0.1958*** |
| (0.0826) | (0.0560) | (0.0704) |
lninv | −0.0149 | 0.0721** | 0.2874*** |
| (0.0587) | (0.0346) | (0.0681) |
lntransport | 0.1845*** | −0.1085*** | −0.4055*** |
| (0.0552) | (0.0337) | (0.0710) |
lngdp | −0.0666 | 0.1347*** | 0.0279 |
| (0.0754) | (0.0415) | (0.0513) |
lntrade | −0.0089 | −0.0439** | −0.0713 |
| (0.0266) | (0.0207) | (0.0627) |