| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 173 | 
                                    
                                    2.7%
                                 | 
| 2 | NO | 676 | 
                                    
                                    10.6%
                                 | 
| 8 | DK | 4 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 5541 | 
                                    
                                    86.7%
                                 |