| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 71 | 
                                    
                                    8.2%
                                 | 
| 2 | NO | 424 | 
                                    
                                    49%
                                 | 
| Sysmiss | 370 | 
                                    
                                    42.8%
                                 |