Table 7 Mechanism analysis.
From: Study on carbon emission reduction effect of institutional openness in China
| Â | Digital transformation | Green technology innovation | ||
|---|---|---|---|---|
Digital economy index | carbon emission | Number of green patents granted | carbon emission | |
Policyit | 0.468*** | − 0.143** | 0.224*** | − 0.162** |
|  | (3.23) | (− 2.26) | (2.58) | (− 2.44) |
lndi×edu |  | − 0.015** |  |  |
| Â | Â | (1.96) | Â | Â |
lngp | Â | Â | Â | 0.045*** |
| Â | Â | Â | Â | (3.14) |
Control | Yes | Yes | Yes | Yes |
City FE | Yes | Yes | Yes | Yes |
Year FE | Yes | Yes | Yes | Yes |
Total Effect |  | − 0.150** |  | − 0.152** |
|  |  | (− 2.37) |  | (− 2.29) |
Direct Effect |  | − 0.143** |  | − 0.162** |
|  |  | (− 2.26) |  | (− 2.44) |
Indirect Effect |  | − 0.007* |  | 0.010** |
|  |  | (− 1.67) |  | (1.99) |
Proportion of intermediary effect | Â | 4.57% | Â | 6.65% |
R2 | 0.163 | 0.408 | 0.024 | 0.396 |
N | 3976 | 3976 | 3976 | 3976 |
