| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 0 |
0%
|
| 1 | Yes | 56 |
12.3%
|
| 2 | No | 401 |
87.7%
|
| Sysmiss | 37 |