| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 2 |
0.5%
|
| -88 | Refused | 1 |
0.2%
|
| 0 | No | 31 |
7.7%
|
| 1 | Yes | 371 |
91.6%
|
| Missing value | 356 |