| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 44 | 
                                    
                                    7.5%
                                 | 
| 2 | NO | 181 | 
                                    
                                    31%
                                 | 
| Sysmiss | 358 | 
                                    
                                    61.4%
                                 |