| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
5.2%
|
| -8 | Refusal (spontaneous) | 2 |
0.6%
|
| 1 | Yes | 77 |
22.1%
|
| 2 | No | 251 |
72.1%
|
| Sysmiss | 14 |