Table 4 Robustness test: instrumental variable regression.
From: Digital finance, innovation transformation, and resilient city growth
res1 | res2 | res3 | ||||
|---|---|---|---|---|---|---|
L.difi | distance | L.difi | distance | L.difi | distance | |
(1) | (2) | (3) | (4) | (5) | (6) | |
difi | 0.0157*** | 0.0609*** | 0.0287*** | 0.1847*** | 0.0336*** | 0.2104*** |
(16.99) | (5.33) | (15.78) | (5.27) | (14.46) | (5.18) | |
_cons | − 0.0457*** | − 0.2942*** | − 0.1118*** | − 0.8978*** | − 0.1353*** | − 1.0255*** |
(− 13.57) | (− 5.09) | (− 12.38) | (− 5.07) | (− 11.70) | (− 5.00) | |
Controls | YES | YES | YES | YES | YES | YES |
City fixed | YES | YES | YES | YES | YES | YES |
Year fixed | YES | YES | YES | YES | YES | YES |
Underidentification test | 760.820 [0.0000] | 25.487 [0.0000] | 760.820 [0.0000] | 25.487 [0.0000] | 760.820 [0.0000] | 25.487 [0.0000] |
Weak variable test | 3.7e+04 {16.38} | 25.698 {16.38} | 3.7e+04 {16.38} | 25.698 {16.38} | 3.7e+04 {16.38} | 25.698 {16.38} |
Obs | 2583 | 2870 | 2583 | 2870 | 2583 | 2870 |
