| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 19 |
2.3%
|
| 2 | No | 782 |
94.1%
|
| 8 | 27 |
3.2%
|
|
| 9 | 3 |
0.4%
|
|
| Sysmiss | 4419 |