| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 81 | 
                                    
                                    25.3%
                                 | 
| 2 | no | 237 | 
                                    
                                    74.1%
                                 | 
| 8 | dk | 2 | 
                                    
                                    0.6%
                                 | 
| Sysmiss | 15031 |