| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 289 | 
                                    
                                    91.2%
                                 | 
| 2 | no | 25 | 
                                    
                                    7.9%
                                 | 
| 8 | dk | 3 | 
                                    
                                    0.9%
                                 | 
| Sysmiss | 15034 |