| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                    
                                    0.5%
                                 | 
| -6 | Still in process | 8 | 
                                    
                                    0.8%
                                 | 
| 1 | Yes | 344 | 
                                    
                                    36%
                                 | 
| 2 | No | 598 | 
                                    
                                    62.6%
                                 |