| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 418 | 
                                    
                                    39%
                                 | 
| 2 | NO | 231 | 
                                    
                                    21.5%
                                 | 
| Sysmiss | 423 | 
                                    
                                    39.5%
                                 |