| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 23 | 
                                    
                                    7.1%
                                 | 
| 2 | NO | 134 | 
                                    
                                    41.1%
                                 | 
| Sysmiss | 169 | 
                                    
                                    51.8%
                                 |