| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.9%
|
| -8 | Refusal (spontaneous) | 2 |
0.5%
|
| 1 | Yes | 146 |
34.3%
|
| 2 | No | 274 |
64.3%
|
| Sysmiss | 3 |