| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 9 |
0.6%
|
| 1 | Yes | 1054 |
67.5%
|
| 2 | No | 498 |
31.9%
|
| Sysmiss | 13 |