| Value | Category |
|---|---|
| 1 | Child, grandchild, great- (great-great-) grandchild, father, mother, father-in-law, mother-in-law, grand- (great-grand)parent |
| 2 | Sibling |
| 3 | Any other kinship relation (e.g. husband, wife, cohabiting partner) |
| 4 | If no kinship relation |
| 8 | Unknown |
| 9 | NIU (not in universe) |