| Father’s education | | |
| Some or completed high school | 29.4 (10) | 17.2 (5) |
| Some or completed college/university | 64.7 (22) | 65.5 (19) |
| Some or completed graduate degree or postgraduate training | 5.9 (2) | 17.2 (5) |
| Mother’s education | | |
| Some or completed high school | 26.5 (9) | 22.9 (8) |
| Some or completed college/university | 70.6 (24) | 68.6 (24) |
| Some or completed graduate degree or postgraduate training | 2.9 (1) | 8.6 (3) |
| Household income ($) | | |
| Below 20 000 | 3.2 (1) | 18.2 (6) |
| 20 000–39 999 | 29.0 (9) | 21.2 (7) |
| 40 000–59 000 | 25.8 (8) | 18.2 (6) |
| 60 000–79 999 | 9.7 (3) | 21.2 (7) |
| Above 80 000 | 32.3 (10) | 21.2 (7) |