| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 2 |
0.3%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Yes | 388 |
49.7%
|
| 2 | No | 391 |
50.1%
|
| Sysmiss | 315 |