| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 30 |
1.3%
|
| 0 | No | 376 |
15.7%
|
| 1 | Yes | 1452 |
60.5%
|
| 9 | Don't know | 542 |
22.6%
|
| 998 | Refused | 0 |
0%
|