| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 154 | 
                                    
                                    30%
                                 | 
| 2 | NO | 34 | 
                                    
                                    6.6%
                                 | 
| Sysmiss | 326 | 
                                    
                                    63.4%
                                 |