| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 3 | 
                                    
                                    0.3%
                                 | 
| -1 | Don't know | 17 | 
                                    
                                    1.4%
                                 | 
| 1 | Have done | 183 | 
                                    
                                    15.3%
                                 | 
| 2 | Might do | 117 | 
                                    
                                    9.8%
                                 | 
| 3 | Would never do | 880 | 
                                    
                                    73.3%
                                 |