| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 1 | Never | 985 | 
                                                                 
                                    
                                    82.1%
                                 
                                                             | 
                                                        
                    
| 2 | Once or twice | 115 | 
                                                                 
                                    
                                    9.6%
                                 
                                                             | 
                                                        
                    
| 3 | A few times | 59 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    
| 4 | Often | 25 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    
| 8 | Refused | 6 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| 9 | Don’t know | 10 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             |