| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 799 | 
                                    
                                    79.9%
                                 | 
| 2 | no | 200 | 
                                    
                                    20%
                                 | 
| 3 | (dk) | 1 | 
                                    
                                    0.1%
                                 | 
| 4 | (ref) | 0 | 
                                    
                                    0%
                                 |