| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 0 |
0%
|
| -888 | -888 | 55 |
13.3%
|
| 0 | No | 57 |
13.8%
|
| 1 | Yes | 250 |
60.4%
|
| 2 | Free (no cost) | 52 |
12.6%
|
| Sysmiss | 4536 |