| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1379 |
25.8%
|
| -8 | Refusal (spontaneous) | 80 |
1.5%
|
| 1 | Yes | 2840 |
53.1%
|
| 2 | No | 1053 |
19.7%
|