| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 3 |
0.1%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 4 |
0.1%
|
| 0 | no | 1314 |
31.9%
|
| 1 | yes | 2800 |
67.9%
|