| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 1 | Yes, fully | 57 | 
                                    
                                    15.7%
                                 | 
| 2 | Yes, partially | 29 | 
                                    
                                    8%
                                 | 
| 3 | No | 277 | 
                                    
                                    76.3%
                                 |