| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 832 | 
                                    
                                    19.6%
                                 | 
| 2 | NO | 40 | 
                                    
                                    0.9%
                                 | 
| 8 | DK | 10 | 
                                    
                                    0.2%
                                 | 
| Sysmiss | 3353 | 
                                    
                                    79.2%
                                 |