| Value | Category | Cases | |
|---|---|---|---|
| 0 | 169 | 
                                                                 
                                    
                                    22.9%
                                 
                                                             | 
                                                        
                    |
| 1 | 545 | 
                                                                 
                                    
                                    73.7%
                                 
                                                             | 
                                                        
                    |
| 2 | 24 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    |
| 3 | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| Missing value | 31 |