| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 8 |
1.6%
|
| 1 | Yes | 33 |
6.5%
|
| 7 | N/A | 469 |
92%
|
| 8 | DK | 0 |
0%
|
| Sysmiss | 2 |