| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
2.2%
|
| -8 | Refusal (spontaneous) | 3 |
0.8%
|
| 1 | Yes | 82 |
22.2%
|
| 2 | No | 277 |
74.9%
|
| Sysmiss | 953 |