| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 177 | 
                                    
                                    39.8%
                                 | 
| 2 | NO | 84 | 
                                    
                                    18.9%
                                 | 
| Sysmiss | 184 | 
                                    
                                    41.3%
                                 |