| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 167 |
13.9%
|
| 1 | Yes | 474 |
39.5%
|
| 8 | Refused | 3 |
0.3%
|
| 9 | Don't know | 556 |
46.3%
|