| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 874 | 
                                    
                                    72.8%
                                 | 
| 1 | Just once or twice | 57 | 
                                    
                                    4.8%
                                 | 
| 2 | Several times | 144 | 
                                    
                                    12%
                                 | 
| 3 | Many times | 64 | 
                                    
                                    5.3%
                                 | 
| 4 | Always | 61 | 
                                    
                                    5.1%
                                 | 
| 9 | Don't Know | 0 | 
                                    
                                    0%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 |