| Value | Category | Cases | |
|---|---|---|---|
| 0 | no: received treatm. | 844 | 
                                                                 
                                    
                                    74.4%
                                 
                                                             | 
                                                        
                    
| 1 | yes: no treatment | 290 | 
                                                                 
                                    
                                    25.6%
                                 
                                                             | 
                                                        
                    
| 9 | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 7097 |