| Value | Category | Cases | |
|---|---|---|---|
| -99 | Do not know | 0 |
0%
|
| 0 | No | 867 |
68.6%
|
| 1 | Yes | 393 |
31.1%
|
| d | 4 |
0.3%
|
|
| Sysmiss | 1471 |