| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 5 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| -1 | Don't know | 4 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| 1 | Have done | 347 | 
                                                                 
                                    
                                    34.7%
                                 
                                                             | 
                                                        
                    
| 2 | Might do | 231 | 
                                                                 
                                    
                                    23.1%
                                 
                                                             | 
                                                        
                    
| 3 | Would never do | 413 | 
                                                                 
                                    
                                    41.3%
                                 
                                                             |