| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 243 | 
                                    
                                    36.2%
                                 | 
| 2 | no | 419 | 
                                    
                                    62.4%
                                 | 
| 3 | (dk) | 6 | 
                                    
                                    0.9%
                                 | 
| 4 | (ref) | 4 | 
                                    
                                    0.6%
                                 | 
| Sysmiss | 2328 |