| 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)** |