| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 299 | 
                                    
                                    10%
                                 | 
| 2 | no | 2683 | 
                                    
                                    89.4%
                                 | 
| 3 | (dk) | 11 | 
                                    
                                    0.4%
                                 | 
| 4 | (ref) | 7 | 
                                    
                                    0.2%
                                 |