| Value | Category |
|---|---|
| 2 | Must travel too far |
| 3 | Did not know it should be registered |
| 5 | Does not know where to register |
| 7 | Father unknown |
| 9 | Parent(s) not registered |
| 10 | Parent(s) non-Bhutanese |
| 11 | Because of travel costs |
| 12 | Parent(s) living abroad |
| 96 | Other |
| 98 | DK |
| 99 | Missing |
| Sysmiss |