| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 546 | 
                                    
                                    45.5%
                                 | 
| 1 | Just once or twice | 172 | 
                                    
                                    14.3%
                                 | 
| 2 | Several times | 201 | 
                                    
                                    16.8%
                                 | 
| 3 | Many times | 138 | 
                                    
                                    11.5%
                                 | 
| 4 | Always | 143 | 
                                    
                                    11.9%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don't Know | 0 | 
                                    
                                    0%
                                 |