| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 204 | 
                                    
                                    30.4%
                                 | 
| 2 | no | 445 | 
                                    
                                    66.2%
                                 | 
| 3 | (dk) | 17 | 
                                    
                                    2.5%
                                 | 
| 4 | (ref) | 6 | 
                                    
                                    0.9%
                                 | 
| Sysmiss | 2328 |