| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 43 |
7.4%
|
| -8 | Refusal (spontaneous) | 37 |
6.4%
|
| 1 | Yes | 65 |
11.2%
|
| 2 | No | 436 |
75%
|
| Sysmiss | 417 |