| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 719 | 
                                                                 
                                    
                                    77.6%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 193 | 
                                                                 
                                    
                                    20.8%
                                 
                                                             | 
                                                        
                    
| 8 | dk | 13 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| 9 | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 17828 |