| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 215 | 
                                    
                                    5.2%
                                 | 
| 2 | NO | 2892 | 
                                    
                                    70.2%
                                 | 
| Sysmiss | 1015 | 
                                    
                                    24.6%
                                 |