| Value | Category | Cases | |
|---|---|---|---|
| -1 | MIssing | 1 |
0.1%
|
| 0 | No | 884 |
73.7%
|
| 1 | Yes | 247 |
20.6%
|
| 9 | Don't know | 68 |
5.7%
|
| 998 | Refused | 0 |
0%
|