Table 9. Regression results of the regional digital economy in the improvement of total factor productivity.
| Variable | Dependent variable: total factor productivity (TFP) | |||
|---|---|---|---|---|
| Eastern China | Northeast China | Central China | Western China | |
| Estimation method | FGLS | |||
| DEI | 0.6170*** | 0.3398*** | 0.1267*** | 0.3688*** |
| (8.49) | (4.40) | (1.21) | (6.70) | |
| TP | 0.0193* | 0.1272** | 0.8072*** | 0.2621** |
| (0.29) | (0.67) | (8.43) | (3.49) | |
| TD | 0.0115** | 0.0140 | 0.0149* | 0.0677** |
| (0.53) | (0.41) | (0.51) | (1.71) | |
| FD | 0.0574*** | -0.0433*** | 0.0492** | 0.06216** |
| (2.63) | (-3.07) | (1.96) | (1.86) | |
| IS | 0.0594*** | 0.0203* | 0.0158 | 0.0553* |
| (2.57) | (0.59) | (0.45) | (1.61) | |
| OPEN | -0.0458 | 0.1923** | 0.3748*** | 0.3477*** |
| (-0.66) | (1.50) | (2.58) | (3.50) | |
| RD | 0.0676 | 0.1009* | -0.1708*** | -0.0800* |
| (0.79) | (0.95) | (-5.70) | (-1.32) | |
| constant | 21.9107*** | 15.3257*** | 7.4225*** | 8.4486*** |
| (8.37) | (2.92) | (5.08) | (1.94) | |
| Wald | 734.95 | 733.26 | 308.85 | 354.72 |
Note: The Z statistic values are in parentheses, and
***, **, * indicate significance at the levels of 1%, 5%, and 10%, respectively. The same applies to the following table.