| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 | 
                                    
                                    1.8%
                                 | 
| 1 | Yes, fully | 581 | 
                                    
                                    96.8%
                                 | 
| 2 | Yes, partially | 5 | 
                                    
                                    0.8%
                                 | 
| 3 | No | 3 | 
                                    
                                    0.5%
                                 |