| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 277 | 
                                    
                                    18.2%
                                 | 
| 2 | NO | 159 | 
                                    
                                    10.5%
                                 | 
| Sysmiss | 1085 | 
                                    
                                    71.3%
                                 |