| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 210 |
16%
|
| 1 | Yes | 812 |
62%
|
| 2 | No | 287 |
21.9%
|
| Sysmiss | 265 |