OLS analysis results

Variables

Coefficient (β)

Error

[95% conf. interval]

Year of schooling

0.079

0.0009856

0.0774/0.0813

Working-age

0.199

0.0015626

0.1959/0.2021

Squared working-age

−0.002

0.0000196

−0.00218/−0.00211