| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 1051 | 
                                    
                                    87.6%
                                 | 
| 1 | Only once | 57 | 
                                    
                                    4.8%
                                 | 
| 2 | A few times | 63 | 
                                    
                                    5.3%
                                 | 
| 3 | Often | 23 | 
                                    
                                    1.9%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 6 | 
                                    
                                    0.5%
                                 |