| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 60 | 
                                    
                                    13.5%
                                 | 
| 2 | NO | 37 | 
                                    
                                    8.3%
                                 | 
| Sysmiss | 348 | 
                                    
                                    78.2%
                                 |