| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 219 | 
                                    
                                    18.3%
                                 | 
| 1 | Once or twice | 127 | 
                                    
                                    10.6%
                                 | 
| 2 | A few times | 157 | 
                                    
                                    13.1%
                                 | 
| 3 | Often | 304 | 
                                    
                                    25.3%
                                 | 
| 7 | Not applicable | 393 | 
                                    
                                    32.8%
                                 | 
| 8 | Refuse to answer | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don't know | 0 | 
                                    
                                    0%
                                 |