| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 0 |
0%
|
| 20 | 170 |
35.5%
|
|
| 98 | Don't know | 108 |
22.5%
|
| 99 | Refused/No answer | 2 |
0.4%
|
| 100 | 199 |
41.5%
|
|
| Sysmiss | 1031 |