| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 1008 | 
                                    
                                    26.8%
                                 | 
| 2 | NO | 278 | 
                                    
                                    7.4%
                                 | 
| Sysmiss | 2471 | 
                                    
                                    65.8%
                                 |