| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 453 | 
                                    
                                    46.8%
                                 | 
| 2 | no | 511 | 
                                    
                                    52.8%
                                 | 
| 3 | (dk) | 3 | 
                                    
                                    0.3%
                                 | 
| 4 | (ref) | 1 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 2032 |