| Father’s status | Son’s status | Total | ||
| High | Middle | Low | ||
| High | 68 | 107 | 1 | 176 |
| Middle | 106 | 1130 | 10 | 1246 |
| Low | 40 | 400 | 88 | 528 |
| Total | 214 | 1637 | 99 | 1950 |