| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 703 | 
                                    
                                    30.2%
                                 | 
| 2 | no | 1611 | 
                                    
                                    69.2%
                                 | 
| 3 | (dk) | 11 | 
                                    
                                    0.5%
                                 | 
| 4 | (ref) | 3 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 672 |