| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.3%
|
| -8 | Refusal (spontaneous) | 4 |
5%
|
| -7 | Does not apply (spontaneous) | 4 |
5%
|
| 1 | Yes | 6 |
7.5%
|
| 2 | No | 65 |
81.3%
|
| Sysmiss | 1366 |