| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 43 |
3.6%
|
| 0 | No | 716 |
59.7%
|
| 1 | Yes | 440 |
36.7%
|
| 9 | Don't know | 1 |
0.1%
|
| 998 | refused | 0 |
0%
|