| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -8 | Refusal (spontaneous) | 2 |
1.8%
|
| 1 | Yes | 15 |
13.8%
|
| 2 | No | 92 |
84.4%
|
| Sysmiss | 492 |