| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 1165 | 
                                    
                                    97.1%
                                 | 
| 1 | Only once | 19 | 
                                    
                                    1.6%
                                 | 
| 2 | A few times | 8 | 
                                    
                                    0.7%
                                 | 
| 3 | Often | 7 | 
                                    
                                    0.6%
                                 | 
| 8 | Refused to answer | 1 | 
                                    
                                    0.1%
                                 | 
| 9 | Don’t know | 0 | 
                                    
                                    0%
                                 |