| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, EMPTIED | 2235 |
24.8%
|
| 4 | NO, NEVER EMPTIED | 201 |
2.2%
|
| 8 | DK | 11 |
0.1%
|
| Sysmiss | 6555 |
72.8%
|