| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.5%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| -7 | Does not apply | 11 |
5.9%
|
| 1 | Yes | 1 |
0.5%
|
| 2 | No | 174 |
93%
|
| Sysmiss | 217 |