| Value | Category | Cases | |
|---|---|---|---|
| -1 | MIssing | 2 |
0.1%
|
| 0 | No | 1055 |
44%
|
| 1 | Yes | 989 |
41.2%
|
| 9 | Don't know | 354 |
14.8%
|
| 998 | Refused | 0 |
0%
|