| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 460 | 
                                    
                                    10.5%
                                 | 
| 3 | No | 3870 | 
                                    
                                    88.7%
                                 | 
| 8 | DK | 35 | 
                                    
                                    0.8%
                                 | 
| Sysmiss | 644 |