Table 9 Results of the two-sided effects test for the inverted U-shaped relationship.

From: Study on the influence of new quality productivity on carbon emissions of the manufacturing industry

Variable

Left side of the inflection

point (New < 6.648)

(1)

Right side of the inflection

point (New > 6.648)

(2)

Difference test

(P-value)

New

1.326**

(0.514)

-0.814***

(0.076)

0.000

Controls

YES

YES

 

N

102

228

 

Adj-R2

0.779

0.968

 
  1. Note: Bootstrap standard errors are in parentheses.