| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 1 |
0.2%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 0 |
0%
|
| 1 | Yes | 55 |
12.1%
|
| 2 | No | 400 |
87.7%
|
| Sysmiss | 38 |