| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 12 | 
                                    
                                    2.1%
                                 | 
| 2 | NO | 311 | 
                                    
                                    53.3%
                                 | 
| Sysmiss | 260 | 
                                    
                                    44.6%
                                 |