| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 968 | 
                                    
                                    80.7%
                                 | 
| 1 | Just once or twice | 43 | 
                                    
                                    3.6%
                                 | 
| 2 | Several times | 103 | 
                                    
                                    8.6%
                                 | 
| 3 | Many times | 46 | 
                                    
                                    3.8%
                                 | 
| 4 | Always | 40 | 
                                    
                                    3.3%
                                 | 
| 9 | Don't Know | 0 | 
                                    
                                    0%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 |