| Father’s status | Son’s status | Total | ||
| High | Middle | Low | ||
| High | 340 | 138 | 60 | 538 |
| Middle | 172 | 229 | 36 | 437 |
| Low | 333 | 338 | 304 | 975 |
| Total | 845 | 705 | 400 | 1950 |