| Value | Category | Cases | |
|---|---|---|---|
| -9 | 4 | 
                                    
                                    18.2%
                                 | |
| 1 | 6 | 
                                    
                                    27.3%
                                 | |
| 2 | 12 | 
                                    
                                    54.5%
                                 | |
| Sysmiss | 193 |