Model 1

Model 2

Individual annual income

−0.010 (−3.202)**

−0.009 (−2.794)**

Junior high school

−0.440 (−7.048)**

−0.341 (−5.375)**

High school or Technical Secondary School

−0.639 (−8.993)**

−0.427 (−5.685)**

College or University graduate

−0.345 (−3.202)**

−0.071 (−0.850)

Urban & rural

−0.486 (−8.480)**

Constant term

6.585 (157.153)**

6.768 (143.955)**