| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.6%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| 1 | Yes | 58 |
37.4%
|
| 2 | No | 96 |
61.9%
|
| Sysmiss | 870 |