Research Article

Evaluating the Effect of China’s Carbon Emission Trading Policy on Energy Efficiency of the Construction Industry Based on a Difference-in-Differences Method

Table 4

Excluding outliers and changes of time.

(1) lnee
Winsor
(2) lnee
Winsor
(3) lnee
2010
(4) lnee
2010
(5) lnee
2011
(6) lnee
2011
(7) lnee
2012
(8) lnee
2012
(9) lnee
2013
(10) lnee
2013

Treatipostt0.2100.189∗∗0.0100.0310.0940.1020.1350.1240.1750.168∗∗
(1.85)(2.69)(0.05)(0.24)(0.59)(1.11)(0.99)(1.45)(1.40)(2.14)

Productivity0.0120.007∗∗0.006∗∗0.0050.006∗∗
(2.03)(2.57)(2.25)(1.82)(2.34)

Machinery−0.018−0.019∗∗−0.019∗∗−0.019∗∗−0.018∗∗
(−1.97)(−2.49)(−2.45)(−2.45)(−2.39)

Urbanratio3.582∗∗2.5292.7302.9613.294
(2.14)(1.31)(1.50)(1.68)(1.97)

Lnesratio0.525∗∗∗0.470∗∗∗0.476∗∗∗0.472∗∗∗0.470∗∗∗
(6.74)(6.01)(5.83)(5.74)(5.59)

Rdratio33.329∗∗36.771∗∗32.578∗∗31.589∗∗29.904∗∗
(2.36)(2.52)(2.29)(2.26)(2.14)

_Cons3.155∗∗∗1.4163.168∗∗∗1.9983.157∗∗∗1.9683.154∗∗∗1.8713.154∗∗∗1.689
(415.36)(1.44)(94.12)(1.65)(147.88)(1.70)(208.44)(1.68)(284.18)(1.60)

Province FEYesYesYesYesYesYesYesYesYesYes
Year FEYesYesYesYesYesYesYesYesYesYes
Adj. R20.8920.9440.8880.9380.8880.9390.8890.9390.8900.940
N270270270270270270270270270270

Standard errors are clustered at the provincial level.t statistics in parentheses. p < 0.10, ∗∗p < 0.05, ∗∗∗p < 0.01.