| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 81 | 
                                    
                                    7.3%
                                 | 
| 2 | NO | 122 | 
                                    
                                    11%
                                 | 
| Sysmiss | 903 | 
                                    
                                    81.6%
                                 |