| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 118 | 
                                    
                                    24.9%
                                 | 
| 2 | no | 352 | 
                                    
                                    74.3%
                                 | 
| 8 | dk | 4 | 
                                    
                                    0.8%
                                 | 
| Sysmiss | 14877 |