| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 | 
                                    
                                    1.9%
                                 | 
| -6 | Still in process | 0 | 
                                    
                                    0%
                                 | 
| 1 | Yes | 36 | 
                                    
                                    9.9%
                                 | 
| 2 | No | 321 | 
                                    
                                    88.2%
                                 |