Table 7 Industrial upgrading effects.

From: Impact of coal-to-gas transition on individual welfare considering the inverted U-shaped regulation effect of natural gas pipeline accessibility

Variable

Primary industries

Secondary industries

Tertiary industries

Industrial structure

Labor force quality metric

Industrial agglomere degree

CTGT

− 0.042** (0.018)

− 0.093*** (0.012)

0.123*** (0.017)

0.052*** (0.018)

0.044*** (0.006)

0.008*** (0.002)

Control variable

Controlled

Controlled

Controlled

Controlled

Controlled

Controlled

Constant

6.826*** (0.269)

− 1.001*** (0.274)

4.327*** (0.151)

9.599*** (0.513)

− 0.098 (0.114)

− 0.188*** (0.018)

R2

0.813

0.888

0.810

0.843

0.943

0.592

Observation

3080

3080

3080

3080

3080

3080

  1. **, and *** denote statistical significance at the 5%, and 1% levels, respectively.Robust standard error in brackets.