| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 1073 | 
                                    
                                    89.4%
                                 | 
| 1 | Only once | 46 | 
                                    
                                    3.8%
                                 | 
| 2 | A few times | 46 | 
                                    
                                    3.8%
                                 | 
| 3 | Often | 17 | 
                                    
                                    1.4%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 18 | 
                                    
                                    1.5%
                                 |