| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 11 | 
                                    
                                    2.7%
                                 | 
| 2 | NO | 160 | 
                                    
                                    39.9%
                                 | 
| Sysmiss | 230 | 
                                    
                                    57.4%
                                 |