| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know (spontaneous) | 4 |
3.3%
|
| -7 | Doesn't apply (spontaneous) | 21 |
17.2%
|
| 1 | Yes | 16 |
13.1%
|
| 2 | No | 81 |
66.4%
|
| Sysmiss | 111 |