| Value | Category | Cases | |
|---|---|---|---|
| 0 | 278 | 
                                                                 
                                    
                                    59.9%
                                 
                                                             | 
                                                        
                    |
| 1 | 152 | 
                                                                 
                                    
                                    32.8%
                                 
                                                             | 
                                                        
                    |
| 2 | 34 | 
                                                                 
                                    
                                    7.3%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 3189 |