| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 1116 | 
                                    
                                    93%
                                 | 
| 1 | Only once | 35 | 
                                    
                                    2.9%
                                 | 
| 2 | A few times | 37 | 
                                    
                                    3.1%
                                 | 
| 3 | Often | 12 | 
                                    
                                    1%
                                 | 
| 9 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 |