| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 7 | 
                                    
                                    0%
                                 | 
| 0 | Never | 9552 | 
                                    
                                    37.6%
                                 | 
| 1 | Once or twice | 3776 | 
                                    
                                    14.9%
                                 | 
| 2 | A few times | 3925 | 
                                    
                                    15.5%
                                 | 
| 3 | Often | 3610 | 
                                    
                                    14.2%
                                 | 
| 7 | No experience | 4345 | 
                                    
                                    17.1%
                                 | 
| 9 | Don't know | 182 | 
                                    
                                    0.7%
                                 | 
| 998 | Refused | 0 | 
                                    
                                    0%
                                 |