| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
3.8%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | 17 |
65.4%
|
|
| 1 | Yes | 5 |
19.2%
|
| 2 | No | 3 |
11.5%
|
| Sysmiss | 125 |