| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 428 | 
                                    
                                    35.7%
                                 | 
| 1 | Just once or twice | 228 | 
                                    
                                    19%
                                 | 
| 2 | Several times | 240 | 
                                    
                                    20%
                                 | 
| 3 | Many times | 163 | 
                                    
                                    13.6%
                                 | 
| 4 | Always | 138 | 
                                    
                                    11.5%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don't Know | 3 | 
                                    
                                    0.3%
                                 |