变量	回归1	回归2	回归3
Media	0.000755^***	0.000763^***	0.000440^***
Media	(0.000149)	(0.000150)	(0.000157)
Lev		−0.000161	−0.000121
Lev		(0.000319)	(0.000318)
ROE		0.000406	0.000446
ROE		(0.000283)	(0.000282)
Growth		−0.000017	−0.000015
Growth		(0.000027)	(0.000027)
year			0.001***
year			(6.40)
_cons	0.009870^***	0.009910^***	0.007760^***
_cons	(0.000764)	(0.000766)	(0.000834)
N	6952	6952	6952
R²	0.004	0.004	0.010