| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 6 |
1.2%
|
| 1 | Yes | 25 |
4.9%
|
| 7 | N/A | 479 |
93.9%
|
| 8 | DK | 0 |
0%
|
| Sysmiss | 2 |