| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 5 |
0.2%
|
| 0 | No | 1708 |
71%
|
| 1 | Yes | 664 |
27.6%
|
| 9 | Don't know | 30 |
1.2%
|
| 998 | Refused | 0 |
0%
|