| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 11 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 838 | 
                                                                 
                                    
                                    69.8%
                                 
                                                             | 
                                                        
                    
| 1 | Just once or twice | 168 | 
                                                                 
                                    
                                    14%
                                 
                                                             | 
                                                        
                    
| 2 | Several times | 108 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    
| 3 | Many times | 55 | 
                                                                 
                                    
                                    4.6%
                                 
                                                             | 
                                                        
                    
| 4 | Always | 20 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    
| 9 | Don't Know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 998 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |