| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 237 | 
                                    
                                    15.6%
                                 | 
| 2 | NO | 13 | 
                                    
                                    0.9%
                                 | 
| Sysmiss | 1271 | 
                                    
                                    83.6%
                                 |