| Value | Category | Cases | |
|---|---|---|---|
| -9 | DON'T KNOW (SPONTANEOUS) | 67 |
6.5%
|
| -8 | REFUSAL (SPONTANEOUS) | 7 |
0.7%
|
| 1 | Yes | 64 |
6.2%
|
| 2 | No | 892 |
86.6%
|
| Sysmiss | 2 |