| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 769 |
56.9%
|
| 2555 | 2 |
0.1%
|
|
| 2556 | 7 |
0.5%
|
|
| 2557 | 21 |
1.6%
|
|
| 2558 | 190 |
14.1%
|
|
| 2559 | 14 |
1%
|
|
| 4444 | Marked on card | 4 |
0.3%
|
| Sysmiss | 344 |
25.5%
|