| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
5.1%
|
| -8 | Refusal (spontaneous) | 2 |
0.8%
|
| 1 | Yes | 5 |
2%
|
| 2 | No | 235 |
92.2%
|
| Sysmiss | 2380 |