| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 4 | 
                                    
                                    0%
                                 | 
| 0 | Never/ Not necessary | 720 | 
                                    
                                    2.8%
                                 | 
| 1 | At least once a year | 3485 | 
                                    
                                    13.7%
                                 | 
| 2 | At least once a month | 11504 | 
                                    
                                    45.3%
                                 | 
| 3 | At least weekly | 4573 | 
                                    
                                    18%
                                 | 
| 4 | All of the time | 2978 | 
                                    
                                    11.7%
                                 | 
| 9 | Don't know | 2133 | 
                                    
                                    8.4%
                                 | 
| 998 | Refused | 0 | 
                                    
                                    0%
                                 |