| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 132 | 
                                    
                                    97.1%
                                 | 
| 2 | no | 2 | 
                                    
                                    1.5%
                                 | 
| 8 | dk | 2 | 
                                    
                                    1.5%
                                 | 
| Sysmiss | 15215 |