Independent variable

Wage level [1]

Wage level [2]

Wage level [3]

Wage log [4]

Experience

819.157

819.208

830.701

0.097871

[Error standar]

[1.537]

[1.539]

[1.5113]

[0.000077]

Experience squared

−9.5042

−9.504

−9.6605

−0.00111

[Error standar]

[0.01596]

[0.01596]

[0.0158]

8.39E−07

Education level

538.334

538.44

537.095

0.00071

[Error standar]

[2.191]

[2.197]

[2.1679]

[0.000016]

Education × experience

−0.0047

[Error standar]

[0.0068]

Unemployment rate

−216.267

−216.27

24.063

−0.015768

[Error standar]

[1.197]

[1.197]

[0.6861]

[0.00007]

Capital accumulation

1326.142

1326.156

0.082519

[Error standar]

[6.728]

[6.729]

3.83E−04

Machinery accumulation

2616.621

[Error standar]

[9.0269]

Economic openness

105.098

105.098

27.315

0.006633

[Error standar]

[0.6925]

[0.69252]

[0.7736]

3.95E−05

Constant

−16934.81

−16936.03

−13747.41

6.96052

[Error standar]

[35.221]

[35.266]

[22.456]

[0.00199]

R2

0.327

0.327

0.332

0.708