Descriptive statics for the probands, that is, age, sex, and education
| Mean age of proband* | High education among probands (%) | Women among probands | |
|---|---|---|---|
| First-degree | |||
| Sibling | 40.9 (16.1) | 28.4 | 71.9 |
| Offspring | 48.2 (13.2) | 29.0 | 74.6 |
| Parent | 37.5 (15.6) | 30.1 | 71.7 |
| Second-degree | |||
| Maternal half-sibling | 33.1 (13.5) | 17.7 | 73.3 |
| Paternal halfsibling | 34.0 (13.5) | 21.6 | 72.9 |
| Niece/nephew | 47.7 (13.2) | 29.2 | 72.1 |
| Third-degree | |||
| cousins | 28.6 (9.5) | 26.8 | 69.9 |
| Non-biological | |||
| spouses | 53.0 (13.9) | 26.9 | 71.3 |
*SDwithin brackets.