| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know (spontaneous) | 1 |
0.8%
|
| -7 | Doesn't apply (spontaneous) | 19 |
15.6%
|
| 1 | Yes | 46 |
37.7%
|
| 2 | No | 56 |
45.9%
|
| Sysmiss | 111 |