| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 2 |
0.3%
|
| -77 | NA | 94 |
15.2%
|
| 1 | Yes | 52 |
8.4%
|
| 2 | No | 469 |
76%
|
| Sysmiss | 5 |