| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
4.8%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| -7 | Does not apply | 1 |
0.5%
|
| 1 | Yes | 20 |
10.7%
|
| 2 | No | 157 |
84%
|
| Sysmiss | 175 |