Table 4 The robustness test results.
From: Digital economy, technological progress, and carbon emissions in Chinese provinces
Variable | Total | Strength | ||||
(1) | (2) | (3) | (4) | (5) | (6) | |
LnDig | 0.042*** (4.87) | 0.167*** (3.37) | 0.070** (0.033) | − 0.243*** (− 4.50) | − 0.106* (− 1.17) | − 0.217*** (0.047) |
LnTec | 0.032** (2.60) | 0.065** (2.13) | 0.133 (0.203) | − 0.024 (− 0.98) | − 0.931*** (− 3.67) | 0.214 (0.295) |
Control variable | Yes | Yes | Yes | Yes | Yes | Yes |
Individual fixed effects | Yes | Yes | Yes | Yes | Yes | Yes |
Year fixed effect | Yes | Yes | Yes | Yes | Yes | Yes |
Sample size | 270 | 270 | 270 | 270 | 270 | 270 |
R2 | 0.239 | 0.234 | 0.304 | 0.536 | 0.607 | 0.775 |
