| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
7%
|
| -8 | Refusal (spontaneous) | 10 |
14.1%
|
| 1 | Yes | 1 |
1.4%
|
| 2 | No | 55 |
77.5%
|
| Sysmiss | 1229 |