| (1) | (2) | (3) | (4) |
Tobin’s Q | Tobin’s Q | Tobin’s Q | Tobin’s Q | |
Treat | −0.631** | −0.678** | 1.679*** | 1.667*** |
(−2.03) | (−2.07) | (3.59) | (3.54) | |
Post | 0.079 | −0.205 | 0.453*** | 0.178* |
(−0.36) | (−0.63) | (5.03) | (1.36) | |
Treat*Post | 0.599*** | 0.741*** | 0.056*** | 0.211*** |
(3.82) | (4.00) | (3.08) | (3.31) | |
控制变量 | 否 | 否 | 是 | 是 |
_cons | 2.682*** | 2.188*** | 24.312*** | 24.790 *** |
(13.25) | (14) | (6.58) | (6.68) | |
控制年份 | 否 | 是 | 否 | 是 |
N | 9505 | 9505 | 7241 | 7241 |
R-squared | 0.0001 | 0.0022 | 0.1002 | 0.1194 |