| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 350 | 
                                    
                                    60%
                                 | 
| 2 | NO | 66 | 
                                    
                                    11.3%
                                 | 
| Sysmiss | 167 | 
                                    
                                    28.6%
                                 |