| (1) | (2) | (3) | (4) |
DIF | 0.293*** (0.72) |
|
|
|
DCB |
| 0.048*** (0.08) |
|
|
DUD |
|
| 0.154*** (0.76) |
|
DSS |
|
|
| 0.104*** (0.77) |
Grow | 0.008*** (13.54) | 0.008*** (13.56) | 0.008*** (13.54) | 0.008*** (13.54) |
Size | 0.132 (1.35) | 0.135 (1.38) | 0.133 (1.36) | 0.133 (1.36) |
Age | −0.105*** (3.23) | −0.093*** (3.27) | −0.105*** (3.18) | −0.109*** (3.16) |
Lev | −0.025*** (7.60) | −0.025*** (7.59) | −0.025*** (7.62) | −0.025*** (7.59) |
Roa | −0.058*** (10.23) | −0.058*** (10.23) | −0.058*** (10.23) | −0.058*** (10.22) |
Ide | 0.012* (1.76) | 0.012* (1.76) | 0.012* (1.76) | 0.012* (1.76) |
Constant | 4.804** (2.20) | 4.624** (2.10) | 4.847** (2.21) | 5.014** (2.26) |
年份 | 控制 | 控制 | 控制 | 控制 |
行业 | 控制 | 控制 | 控制 | 控制 |
R-squared | 0.088 | 0.088 | 0.088 | 0.088 |