| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refusal | 0 |
0%
|
| -8 | Don't know | 0 |
0%
|
| 0 | No | 678 |
12.9%
|
| 1 | Yes | 619 |
11.8%
|
| Missing value | 3947 |
75.3%
|