变量	Tobit	Tobit	随机效应	随机效应
变量	大规模企业 (1)	小规模企业 (2)	大规模企业 (3)	小规模企业 (4)
power	−2.149^**	−0.515	−0.055^**	−0.028
power	(−2.49)	(−1.62)	(−2.27)	(−1.03)
first	−2.167^**	−0.397	−0.027	−0.005
first	(−2.52)	(−1.06)	(−0.87)	(−0.11)
age	−2.035^**	0.186	−0.057	0.013
age	(−2.24)	(0.56)	(−1.62)	(0.32)
pattern	0.002	−1.168^***	−0.025	−0.106^**
pattern	(0.00)	(−3.19)	(−0.82)	(−2.39)
xjldx	0.026	0.325	−0.003	0.040
xjldx	(0.07)	(0.71)	(−0.40)	(1.16)
asset	−2.188^***	−0.757^**	−0.092^***	−0.071^*
asset	(−2.77)	(−2.28)	(−3.33)	(−1.93)
profit	1.746^**	−0.372	0.038	−0.041^*
profit	(2.08)	(−1.31)	(1.52)	(−1.93)
constant	−11.415^***	−5.292^***	0.135^**	0.268^***
constant	(−3.86)	(−5.52)	(2.05)	(4.78)
N	2003	2179	2003	2179
Year	Yes	Yes	Yes	Yes
df_m	12.000	12.000	12.000	12.000
F	1.826	1.883
R²			0.05	0.02