| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 309 | 
                                    
                                    22.7%
                                 | 
| 2 | NO | 116 | 
                                    
                                    8.5%
                                 | 
| Sysmiss | 939 | 
                                    
                                    68.8%
                                 |