| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 940 | 
                                    
                                    31.3%
                                 | 
| 2 | no | 2056 | 
                                    
                                    68.5%
                                 | 
| 3 | (dk) | 2 | 
                                    
                                    0.1%
                                 | 
| 4 | (ref) | 2 | 
                                    
                                    0.1%
                                 |