| Value | Category | Cases | |
|---|---|---|---|
| 0 | nr | 0 |
0%
|
| 1 | yes | 118 |
11.4%
|
| 2 | no | 904 |
87.3%
|
| 4 | 6 |
0.6%
|
|
| 9 | 8 |
0.8%
|
|
| Sysmiss | 1964 |