| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
7.8%
|
| -8 | Refusal (spontaneous) | 12 |
5.2%
|
| 1 | Yes | 14 |
6.1%
|
| 2 | No | 186 |
80.9%
|
| Sysmiss | 132 |