| Value | Category | Cases | |
|---|---|---|---|
| 0 | 431 | 
                                                                 
                                    
                                    89.2%
                                 
                                                             | 
                                                        
                    |
| 1 | 52 | 
                                                                 
                                    
                                    10.8%
                                 
                                                             | 
                                                        
                    |
| -99 | 12 | ||
| Sysmiss | 162 |