| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 121 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             | 
                                                        
                    
| 2 | No | 1311 | 
                                                                 
                                    
                                    90.7%
                                 
                                                             |