| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 12 |
0.4%
|
| 1 | Yes | 559 |
20.2%
|
| 2 | No | 2194 |
79.3%
|
| Sysmiss | 13 |