| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 1 | Yes, fully | 158 | 
                                                                 
                                    
                                    27.1%
                                 
                                                             | 
                                                        
                    
| 2 | Yes, partially | 106 | 
                                                                 
                                    
                                    18.2%
                                 
                                                             | 
                                                        
                    
| 3 | No | 317 | 
                                                                 
                                    
                                    54.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 850 |