| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 129 | 
                                    
                                    22.1%
                                 | 
| 2 | NO | 125 | 
                                    
                                    21.4%
                                 | 
| Sysmiss | 329 | 
                                    
                                    56.4%
                                 |