| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 457 |
33.8%
|
| 2555 | 38 |
2.8%
|
|
| 2556 | 137 |
10.1%
|
|
| 2557 | 184 |
13.6%
|
|
| 2558 | 166 |
12.3%
|
|
| 2559 | 19 |
1.4%
|
|
| 4444 | Marked on card | 6 |
0.4%
|
| Sysmiss | 344 |
25.5%
|