| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 1 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| -888 | -888 | 6 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| -777 | Not Applicable | 29 | 
                                                                 
                                    
                                    9.8%
                                 
                                                             | 
                                                        
                    
| 0 | No | 60 | 
                                                                 
                                    
                                    20.3%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 199 | 
                                                                 
                                    
                                    67.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 617 |