| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 1835 |
20.3%
|
| 2 | No | 6743 |
74.6%
|
| 8 | DK | 144 |
1.6%
|
| 9 | NS | 314 |
3.5%
|
| Sysmiss | 23563 |