| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 810 | 
                                    
                                    13.9%
                                 | 
| 2 | no | 5012 | 
                                    
                                    85.9%
                                 | 
| 8 | dk | 16 | 
                                    
                                    0.3%
                                 | 
| Sysmiss | 9513 |