| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 8 |
0.2%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 20 |
0.5%
|
| 0 | no | 144 |
3.5%
|
| 1 | yes | 3949 |
95.8%
|