| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 16 |
1.9%
|
| 2 | No | 328 |
38%
|
| 3 | Not applicable | 518 |
60%
|
| 9 | 2 |
0.2%
|
|
| Sysmiss | 3104 |