城市环境立法能够提升企业出口国内附加值率吗?——基于双重差分模型(DID)的实证研究
张兵兵, 胡榴榴

Can urban environmental legislation improve the enterprises export domestic value added ratio? Empirical research based on difference-in-differences (DID) model
ZHANG Bingbing, HU Liuliu
表4 城市环境立法影响企业出口DVAR的稳健性检验(II)
Tab. 4 Robustness test of the impact of urban environmental legislation on enterprise DVAR (II)
被解释变量 dvar
剔除极端值 动态时间窗
(1) (2) (3) (4) (5) (6)
post×treat -0.0046***
(-2.58)
-0.0029*
(-1.75)
-0.0099**
(-1.96)
-0.0095***
(-2.62)
-0.0083***
(-2.78)
-0.0054**
(-2.05)
_cons 0.9760***
(24.82)
0.9728***
(17.91)
1.1838***
(14.12)
1.0403***
(12.57)
0.9485***
(21.91)
0.9681***
(26.84)
Control YES YES YES YES YES YES
ai YES YES YES YES YES YES
at YES YES YES YES YES YES
aj YES YES YES YES YES YES
ap YES YES YES YES YES YES
N 181923 163731 13268 21454 28766 36534
adj. R2 0.102 0.099 0.065 0.054 0.058 0.060