Table 7 Estimated results of mechanism analysis.

From: Effect of PM2.5 pollution on perinatal mortality in China

Explanatory variable

Explained variable: Perinatal mortality

(1)

(2)

Average PM2.5 (log)

0.433

 

(1.307)

 

w5* Average PM2.5 (log)

0.626**

 

(0.265)

 

Max PM2.5 (log)

 

0.807

 

(0.939)

w5* Max PM2.5 (log)

 

0.652**

 

(0.268)

w5

− 1.085

− 1.387

(0.922)

(0.977)

Urbanization

− 0.003

− 0.000

(0.019)

(0.018)

GDP per capita(log)

− 6.034***

− 5.766***

(1.912)

(1.934)

bed_pop

0.021

0.012

(0.055)

(0.054)

ha_pop

− 0.040

− 0.039

(0.042)

(0.039)

Constant

33.247***

30.869***

(6.468)

(6.664)

Year fixed effects

Y

Y

Province fixed effects

Y

Y

Within Rsquared

0.773

0.774

Observation

434

434

  1. Standard errors in parentheses. *p < 0.1, **p < 0.05, ***p < 0.01.