| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 481 | 
                                    
                                    40.1%
                                 | 
| 1 | Just once or twice | 231 | 
                                    
                                    19.3%
                                 | 
| 2 | Several times | 209 | 
                                    
                                    17.4%
                                 | 
| 3 | Many times | 160 | 
                                    
                                    13.3%
                                 | 
| 4 | Always | 118 | 
                                    
                                    9.8%
                                 | 
| 8 | Refused | 1 | 
                                    
                                    0.1%
                                 | 
| 9 | Don't Know | 0 | 
                                    
                                    0%
                                 |