| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refusal | 0 |
0%
|
| -8 | Don't know | 3 |
0.1%
|
| 0 | No | 504 |
9.6%
|
| 1 | Yes | 3907 |
74.5%
|
| Missing value | 830 |
15.8%
|