| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
1%
|
| -8 | Refusal (spontaneous) | 197 |
15.2%
|
| 1 | Yes | 39 |
3%
|
| 2 | No | 1051 |
80.8%
|