| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 4 |
0.2%
|
| 0 | No | 1830 |
76%
|
| 1 | Yes | 570 |
23.7%
|
| 9 | Don't know | 3 |
0.1%
|
| 998 | Refused | 0 |
0%
|