| Value | Category | Cases | |
|---|---|---|---|
| 0 | 7 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    |
| 1 | 237 | 
                                                                 
                                    
                                    46.8%
                                 
                                                             | 
                                                        
                    |
| 2 | 215 | 
                                                                 
                                    
                                    42.5%
                                 
                                                             | 
                                                        
                    |
| Missing value | 47 | 
                                                                 
                                    
                                    9.3%
                                 
                                                             |