Table 9 Results of the mediating effect test with Sobel's method.

From: The impact of digital economy on green total factor productivity considering the labor-technology-pollution factors

Content of the test

ide → gtc → gtfp

ide → gec → gtfp

Coef

Std Err

P >|Z|

Coef

Std Err

P >|Z|

ax

4.025***

0.493

0.000

 − 0.731

0.553

0.186

bx

0.649***

0.074

0.000

0.472***

0.070

0.000

cx

2.282***

0.627

0.000

2.282***

0.627

0.000

abx

2.613***

0.437

0.000

 − 0.345

0.266

0.195

c'x

 − 0.331

0.617

0.591

2.627

0.573

0.000

sobel

2.613

0.437

0.000

 − 0.345

0.266

0.195

goodman-1

2.613

0.439

0.000

 − 0.345

0.269

0.199

goodman-2

2.613

0.436

0.000

 − 0.345

0.263

0.190

ab/c'(|ab/c'|)

 − 7.885 (7.885)

  

 − 0.132 (0.132)

  
  1. Note: ***, **, * denote significant at the 1%, 5% and 10% levels respectively.
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