| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 3950 |
15.7%
|
| 2 | No | 21204 |
84.1%
|
| 8 | Dk | 40 |
0.2%
|
| 9 | Missing | 5 |
0%
|
| Sysmiss | 818 |