| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 6 |
0.9%
|
| -88 | Refused | 11 |
1.6%
|
| 0 | No | 636 |
91.6%
|
| 1 | Yes | 41 |
5.9%
|
| Missing value | 524 |