| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 20 |
8.7%
|
| 2 | No | 205 |
89.1%
|
| 8 | dk | 4 |
1.7%
|
| 9 | na | 1 |
0.4%
|
| Sysmiss | 97 |