| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 540 | 
                                    
                                    35.5%
                                 | 
| 2 | NO | 340 | 
                                    
                                    22.4%
                                 | 
| Sysmiss | 641 | 
                                    
                                    42.1%
                                 |