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. 2022 Oct 7;19(19):12846. doi: 10.3390/ijerph191912846

Table 3.

Robust check: different model. This table reports the results of OLS regressions examining the effect of digital transformation on environmental pollution. Appendix A provides variable definitions. The regressions control for the interaction term of industry and year fixed effects. In parentheses are t-statistics based on standard errors adjusted for heteroskedasticity and firm clustering.

(1) (2)
Wwater Wgas
Digital −0.021 *** −0.036 ***
(−3.10) (−2.91)
Size 0.043 *** 0.144 ***
(6.81) (9.37)
ROA −0.164 −0.032
(−1.42) (−0.15)
Lev −0.119 *** −0.406 ***
(−3.67) (−5.29)
Growth 0.052 *** 0.077 ***
(4.07) (3.33)
PPE −0.331 *** −0.156
(−5.53) (−0.76)
Nership −0.000 0.002 **
(−0.69) (2.53)
Wedge −0.001 −0.003 *
(−1.64) (−1.71)
Duality 0.009 −0.018
(0.74) (−0.92)
Restriction 0.008 0.032 *
(0.96) (1.76)
Indepboard 0.001 0.002
(0.50) (1.16)
Compensation −0.063 * −0.152 **
(−1.67) (−2.07)
Share −0.001 ** −0.001 **
(−2.14) (−2.05)
Constant −0.742 *** −2.683 ***
(−5.24) (−8.21)
Industry FE * Year FE Y Y
N 21,031 21,031
R 2 0.008 0.023

Superscripts *, ** and *** denote significance at the 10%, 5% and 1% levels, respectively.