| Father’s status | Son’s status | Total | ||
| High | Middle | Low | ||
| High | 254 | 114 | 87 | 455 |
| Middle | 80 | 184 | 44 | 308 |
| Low | 407 | 525 | 613 | 1545 |
| Total | 741 | 823 | 744 | 2308 |