Table 3 Difference-in-difference model (DID) regression results.
From: The impact of smart city construction (SCC) on pollution emissions (PE): evidence from China
(1) | (2) | (3) | (4) | (5) | (6) | |
|---|---|---|---|---|---|---|
\(VSD\) | \(lnSO2\) | \(lnEFD\) | \(VSD\) | \(lnSO2\) | \(lnEFD\) | |
\(did\) | − 1.025*** | − 0.654*** | − 0.188*** | − 0.953*** | − 0.113* | − 0.180*** |
(− 5.49) | (− 11.47) | (− 4.25) | (− 5.06) | (− 1.71) | (− 4.14) | |
\(lngdp\) | 1.756* | 0.549 | 1.561*** | |||
(2.34) | (1.13) | (7.86) | ||||
\(lnpergdp\) | − 1.267 | − 0.845 | − 1.373*** | |||
(− 1.60) | (− 1.68) | (− 6.97) | ||||
\(urban\) | − 0.0281* | − 0.019*** | 0.002 | |||
(− 2.42) | (− 4.32) | (0.61) | ||||
\(fdigdp\) | − 10.17** | − 4.037** | − 6.255*** | |||
(− 3.14) | (− 2.90) | (− 6.62) | ||||
\(gardon\) | 0.552* | − 0.123* | 0.007 | |||
(2.31) | (− 2.12) | (0.16) | ||||
\(secagg\) | − 3.018 | − 1.751*** | − 1.132*** | |||
(− 1.30) | (− 3.35) | (− 4.54) | ||||
\(Year FE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) |
\(City FE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) | \(TRUE\) |
\(N\) | 3990 | 3989 | 3990 | 3989 | 3988 | 3989 |
\({R}^{2}\) | 0.7372 | 0.7820 | 0.6882 | 0.7401 | 0.7842 | 0.6984 |
