| Value | Category | Cases | |
|---|---|---|---|
| -1 | 8385 | 
                                                                 
                                    
                                    51.4%
                                 
                                                             | 
                                                        
                    |
| 0 | 2678 | 
                                                                 
                                    
                                    16.4%
                                 
                                                             | 
                                                        
                    |
| 1 | 5262 | 
                                                                 
                                    
                                    32.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 245 |