| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 18 |
2.4%
|
| -8 | does not apply | 3 |
0.4%
|
| -7 | refused to answer | 0 |
0%
|
| 0 | no | 612 |
81%
|
| 1 | yes | 123 |
16.3%
|