| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 69 |
3.5%
|
| -8 | Refusal (spontaneous) | 125 |
6.4%
|
| 1 | Yes | 368 |
18.8%
|
| 2 | No | 1399 |
71.3%
|
| Sysmiss | 7415 |