| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 884 | 
                                    
                                    29.5%
                                 | 
| 2 | no | 2081 | 
                                    
                                    69.4%
                                 | 
| 3 | (dk) | 23 | 
                                    
                                    0.8%
                                 | 
| 4 | (ref) | 12 | 
                                    
                                    0.4%
                                 |