| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2719 |
96.1%
|
|
| 1 | 84 |
3%
|
|
| 888 | 5 |
0.2%
|
|
| 999 | 20 |
0.7%
|
|
| Sysmiss | 2001 |