| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
6.6%
|
| -8 | Refusal (spontaneous) | 7 |
9.2%
|
| 1 | Yes | 25 |
32.9%
|
| 2 | No | 39 |
51.3%
|
| Sysmiss | 1261 |