| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 2 | 
                                    
                                    0.2%
                                 | 
| 2 | NO | 264 | 
                                    
                                    32.5%
                                 | 
| Sysmiss | 546 | 
                                    
                                    67.2%
                                 |