| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 1609 | 
                                    
                                    78.7%
                                 | 
| 2 | no | 422 | 
                                    
                                    20.6%
                                 | 
| 8 | dk | 13 | 
                                    
                                    0.6%
                                 | 
| Sysmiss | 13307 |