| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 546 | 
                                    
                                    45.5%
                                 | 
| 1 | Only once | 74 | 
                                    
                                    6.2%
                                 | 
| 2 | A few times | 273 | 
                                    
                                    22.8%
                                 | 
| 3 | Often | 307 | 
                                    
                                    25.6%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 0 | 
                                    
                                    0%
                                 |