| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 2 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 479 | 
                                                                 
                                    
                                    40%
                                 
                                                             | 
                                                        
                    
| 1 | Once or twice | 225 | 
                                                                 
                                    
                                    18.8%
                                 
                                                             | 
                                                        
                    
| 2 | A few times | 229 | 
                                                                 
                                    
                                    19.1%
                                 
                                                             | 
                                                        
                    
| 3 | Often | 143 | 
                                                                 
                                    
                                    11.9%
                                 
                                                             | 
                                                        
                    
| 7 | No experience | 115 | 
                                                                 
                                    
                                    9.6%
                                 
                                                             | 
                                                        
                    
| 9 | Don't know | 5 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| 998 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |