| 变量 | (1) | (2) | (3) | (4) | 
| 0 VS 1,2,3,4 | 0,1 VS 2,3,4 | 0,1,2 VS 3,4 | 0,1,2,3 VS 4 | |
| 性别 | 0.290*** | 0.427*** | 0.739*** | 0.701*** | 
| 
 | (2.68) | (3.69) | (4.77) | (3.22) | 
| 年龄 | 0.637*** | 0.486*** | 0.598*** | 0.337* | 
| 
 | (4.73) | (3.77) | (4.01) | (1.80) | 
| 教育年限 | 0.077*** | 0.055** | 0.086*** | 0.049 | 
| 
 | (3.48) | (2.51) | (3.13) | (1.50) | 
| 婚姻状况 | 0.828*** | 0.914*** | 1.034*** | 1.185*** | 
| 
 | (5.65) | (5.69) | (4.93) | (4.13) | 
| 政治面貌 | 0.746*** | 0.964*** | 1.175*** | 1.387*** | 
| 
 | (4.06) | (5.58) | (6.16) | (5.85) | 
| 血缘信任 | −0.022 | −0.073 | −0.019 | −0.203 | 
| 
 | (−0.23) | (−0.75) | (−0.17) | (−1.44) |