| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 1415 | 
                                    
                                    69.1%
                                 | 
| 2 | no | 593 | 
                                    
                                    29%
                                 | 
| 8 | dk | 39 | 
                                    
                                    1.9%
                                 | 
| Sysmiss | 13304 |