| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2 |
33.3%
|
|
| 97 | Refuse | 0 |
0%
|
| 98 | Don't know | 1 |
16.7%
|
| 99 | Missing | 3 |
50%
|
| Sysmiss | 1719 |