Variable Name

Variable Symbol

Relative growth rate of high-skilled labor wages High_urbanwage

(1)

Fixed Effects

(2)

System GMM

(3)

One-step differential GMM

First-order lag terms of relative wage growth rates in information transmission software and information technology services

L1.High_urbanwage

−0.070*

(0.063)

−0.137*

(0.085)

Number of industrial robots

lnR

0.123*

(0.063)

0.021

(0.015)

0.464

(0.511)

Labor productivity growth rate in the information transmission software and information technology services

High_lpd

0.238***

(0.057)

0.256***

(0.067)

0.214***

(0.042)

Constant term

_cons

−0.295

(0.179)

Year fixed effects and control variables

control

control

control

Adjusted R²

adj.R²

0.285

Observations

N

240

180

210