| Value | Category |
|---|---|
| 1 | birth |
| 2 | birth death |
| 3 | birth divorce |
| 4 | birth marriage |
| 5 | birth marriage death |
| 6 | birth marriage divorce |
| 7 | death |
| 8 | death birth |
| 9 | divorce |
| 10 | divorce death |
| 11 | divorce other |
| 12 | marriage |
| 13 | marriage death |
| 14 | marriage divorce |
| 15 | marriage divorce death |
| 16 | marriage other |
| 17 | no |
| 18 | other |
| 19 | prefer_not_to_answer |