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General data about the parents’ group
| Who filled the survey | Mother | 60 | 70% |
| Father | 23 | 27% | |
| Other family member | 1 | 1% | |
| Unknown | 2 | 2% | |
| Highest educational qualification of either of the parents | Primary education | 15 | 17% |
| High-school education | 15 | 17% | |
| University diploma | 51 | 59% | |
| Unknown | 5 | 6% | |
| Age in years | < 30 | 16 | 19% |
| 30–44 | 65 | 76% | |
| > 44 | 5 | 6% |
