| Value | Category | Cases | |
|---|---|---|---|
| 0 | no: received treatm. | 149 | 
                                    
                                    31.1%
                                 | 
| 1 | yes: no treatment | 326 | 
                                    
                                    68.1%
                                 | 
| 8 | dk | 4 | 
                                    
                                    0.8%
                                 | 
| Sysmiss | 14467 |