| Value | Category | Cases | |
|---|---|---|---|
| -9 | 104 | 
                                    
                                    11.9%
                                 | |
| 1 | 329 | 
                                    
                                    37.6%
                                 | |
| 2 | 442 | 
                                    
                                    50.5%
                                 | |
| Sysmiss | 123 |