| Value | Category | Cases | |
|---|---|---|---|
| -1 | MIssing | 1 |
0%
|
| 0 | No | 513 |
21.3%
|
| 1 | Yes | 1837 |
76.3%
|
| 9 | Don't know | 56 |
2.3%
|
| 998 | Refused | 0 |
0%
|