| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.4%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| 1 | Yes | 142 |
51.3%
|
| 2 | No | 134 |
48.4%
|
| Sysmiss | 483 |