| Value | Category | Cases | |
|---|---|---|---|
| 0 | 507 |
49%
|
|
| 1 | 477 |
46.1%
|
|
| 9998 | 28 |
2.7%
|
|
| 9999 | 22 |
2.1%
|
|
| Sysmiss | 1661 |