| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 482 | 
                                                                 
                                    
                                    40.2%
                                 
                                                             | 
                                                        
                    
| 1 | Just once or twice | 245 | 
                                                                 
                                    
                                    20.4%
                                 
                                                             | 
                                                        
                    
| 2 | Several times | 201 | 
                                                                 
                                    
                                    16.8%
                                 
                                                             | 
                                                        
                    
| 3 | Many times | 106 | 
                                                                 
                                    
                                    8.8%
                                 
                                                             | 
                                                        
                    
| 4 | Always | 166 | 
                                                                 
                                    
                                    13.8%
                                 
                                                             | 
                                                        
                    
| 8 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | Don't Know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |