| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 276 | 
                                    
                                    23%
                                 | 
| 1 | Just once or twice | 232 | 
                                    
                                    19.3%
                                 | 
| 2 | Several times | 292 | 
                                    
                                    24.3%
                                 | 
| 3 | Many times | 230 | 
                                    
                                    19.2%
                                 | 
| 4 | Always | 161 | 
                                    
                                    13.4%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don't Know | 9 | 
                                    
                                    0.8%
                                 |