| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 20 |
1.7%
|
| 0 | No | 454 |
37.8%
|
| 1 | Yes | 717 |
59.8%
|
| 9 | Don't know | 9 |
0.8%
|
| 998 | Refused | 0 |
0%
|