| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
1.4%
|
| -7 | Does not apply (spontaneous) | 6 |
1.7%
|
| 1 | Yes | 171 |
47.1%
|
| 2 | No | 181 |
49.9%
|
| Sysmiss | 2 |