| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 157 | 
                                                                 
                                    
                                    13.4%
                                 
                                                             | 
                                                        
                    
| 1 | Once or twice | 2 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 2 | A few times | 3 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 3 | Often | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 7 | Not Applicable | 1013 | 
                                                                 
                                    
                                    86.1%
                                 
                                                             | 
                                                        
                    
| 8 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | Don't Know | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             |