| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 81 | 
                                    
                                    7.6%
                                 | 
| 2 | NO | 148 | 
                                    
                                    13.9%
                                 | 
| Sysmiss | 832 | 
                                    
                                    78.4%
                                 |