| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 8 |
1.4%
|
| 1 | Yes | 296 |
51.7%
|
| 2 | No | 268 |
46.9%
|
| Sysmiss | 628 |