| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 16 | 
                                    
                                    9.5%
                                 | 
| 2 | NO | 41 | 
                                    
                                    24.4%
                                 | 
| Sysmiss | 111 | 
                                    
                                    66.1%
                                 |