| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refusal | 0 |
0%
|
| -8 | Don't know | 0 |
0%
|
| 0 | No | 433 |
8.3%
|
| 1 | Yes | 169 |
3.2%
|
| Missing value | 4642 |
88.5%
|