Correlation coefficients between current and parental socioeconomic circumstances in the population sample (controls)
| Own education | Car ownership | Crowding | Mother's education | Father's education | |
| Own education | 1.0 | ||||
| Car ownership | 0.17 | 1.0 | |||
| Crowding | 0.03 | 0.01 | 1.0 | ||
| Mother's education | 0.31 | 0.03 | 0.01 | 1.0 | |
| Father's education | 0.32 | 0.05 | 0.02 | 0.52 | 1.0 |
| Adult height | 0.22 | 0.12 | 0.07 | 0.10 | 0.11 |