| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 351 | 
                                    
                                    5.5%
                                 | 
| 2 | NO | 17 | 
                                    
                                    0.3%
                                 | 
| 8 | DK | 34 | 
                                    
                                    0.5%
                                 | 
| Sysmiss | 5992 | 
                                    
                                    93.7%
                                 |