| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 634 | 
                                    
                                    15%
                                 | 
| 2 | NO | 218 | 
                                    
                                    5.1%
                                 | 
| 8 | DK | 30 | 
                                    
                                    0.7%
                                 | 
| Sysmiss | 3353 | 
                                    
                                    79.2%
                                 |