| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 58 | 
                                    
                                    5.5%
                                 | 
| 2 | NO | 331 | 
                                    
                                    31.2%
                                 | 
| Sysmiss | 672 | 
                                    
                                    63.3%
                                 |