| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
2.7%
|
| -8 | Refusal (spontaneous) | 3 |
0.4%
|
| 1 | Yes | 306 |
45.7%
|
| 2 | No | 343 |
51.2%
|
| Sysmiss | 667 |