| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
1.6%
|
| -8 | Refusal (spontaneous) | 2 |
0.5%
|
| 1 | Yes | 87 |
23.1%
|
| 2 | No | 281 |
74.7%
|
| Sysmiss | 1 |