| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 13 |
13.3%
|
| 1 | Yes | 44 |
44.9%
|
| 2 | No | 41 |
41.8%
|
| Sysmiss | 1 |