| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 1 |
0.1%
|
| -88 | Refused | 0 |
0%
|
| 0 | No | 131 |
17.1%
|
| 1 | Yes | 632 |
82.7%
|
| Missing value | 454 |