| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 77 |
10.7%
|
| -8 | Refusal (spontaneous) | 29 |
4%
|
| -7 | Does not apply (spontaneous) | 1 |
0.1%
|
| 1 | Yes | 83 |
11.5%
|
| 2 | No | 533 |
73.7%
|
| Sysmiss | 8653 |