| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
4.8%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| 1 | Yes | 6 |
5.7%
|
| 2 | No | 94 |
89.5%
|
| Sysmiss | 202 |