| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refusal | 0 |
0%
|
| -8 | Don't know | 0 |
0%
|
| 0 | No | 1196 |
22.8%
|
| 1 | Yes | 97 |
1.8%
|
| Missing value | 3951 |
75.3%
|