| Value | Category | Cases | |
|---|---|---|---|
| 0 | no: received treatm. | 25 | 
                                                                 
                                    
                                    54.3%
                                 
                                                             | 
                                                        
                    
| 1 | yes: no treatment | 21 | 
                                                                 
                                    
                                    45.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 6709 |