| Value | Category | Cases | |
|---|---|---|---|
| -88 | Don't know | 1 |
2.9%
|
| 11 | 28 |
82.4%
|
|
| 12 | 4 |
11.8%
|
|
| 13 | 1 |
2.9%
|
|
| Sysmiss | 125 |