Table 6.
Effect of HHI on PM2.5
| Variables | Coef. | Std. Err. | t | P > t | [95% Conf.Interval] |
|---|---|---|---|---|---|
| HHI | -6.034*** | 1.042 | -5.790 | 0 | [-8.084363,-3.98377] |
| HHI2 | 7.963*** | 2.048 | 3.890 | 0 | [3.934304,11.99192] |
| MIS | 0.505*** | 0.090 | 5.630 | 0 | [0.3282667,0.680802] |
| lnEG | -0.555*** | 0.061 | -9.100 | 0 | [-0.6754125,-0.4352272] |
| lnIS | 0.322*** | 0.059 | 5.500 | 0 | [0.2070937,0.437571] |
| ES | -0.154*** | 0.051 | -3.020 | 0.003 | [-0.2549286,-0.0537063] |
| lnEO | 0.030*** | 0.020 | 1.460 | 0.146 | [-0.0103181,0.0693673] |
| lnEDU | 0.479*** | 0.047 | 10.080 | 0 | [0.3852432,0.5721641] |
| lnQL | 0.462*** | 0.078 | 5.910 | 0 | [0.308571,0.6163408] |
| _cons | 2.599*** | 0.409 | 6.360 | 0 | [1.794349,3.403734] |