| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 970 | 
                                                                 
                                    
                                    82.5%
                                 
                                                             | 
                                                        
                    
| 1 | Just once or twice | 101 | 
                                                                 
                                    
                                    8.6%
                                 
                                                             | 
                                                        
                    
| 2 | Several times | 54 | 
                                                                 
                                    
                                    4.6%
                                 
                                                             | 
                                                        
                    
| 3 | Many times | 24 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 4 | Always | 22 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    
| 8 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | Don't Know | 5 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             |