| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 436 | 
                                    
                                    28.7%
                                 | 
| 2 | NO | 133 | 
                                    
                                    8.7%
                                 | 
| Sysmiss | 952 | 
                                    
                                    62.6%
                                 |