变量 | (1) | (2) | (3) |
ROA | ROA | ROA | |
Econ1 | 1.491*** |
| 1.270*** |
| (18.87) |
| (16.62) |
ICQ |
| 0.014*** | 0.013*** |
|
| (27.76) | (26.95) |
Size | 1.086*** | 1.105*** | 0.775*** |
| (21.73) | (25.73) | (16.15) |
Debt | −17.818*** | −15.955*** | −15.343*** |
| (−51.27) | (−49.72) | (−47.26) |
Y1 | 4.213*** | 3.597*** | 3.320*** |
| (29.44) | (26.25) | (24.31) |
_cons | −37.803*** | −26.043*** | −36.386*** |
| (−32.64) | (−27.25) | (−33.07) |
年度效应 | 控制 | 控制 | 控制 |
行业效应 | 控制 | 控制 | 控制 |
N | 20,752 | 20,752 | 20,752 |
adj. R2 | 0.264 | 0.316 | 0.326 |
F | 168.077 | 173.041 | 185.337 |