| Value | Category | Cases | |
|---|---|---|---|
| 1 | Did not occur | 195 | 
                                    
                                    1.1%
                                 | 
| 2 | 1-2 times during the year | 2051 | 
                                    
                                    11.7%
                                 | 
| 3 | 3-4 times during the year | 4006 | 
                                    
                                    22.9%
                                 | 
| 4 | Once a month | 4242 | 
                                    
                                    24.3%
                                 | 
| 5 | Once a week | 2638 | 
                                    
                                    15.1%
                                 | 
| 6 | More than once a week | 4354 | 
                                    
                                    24.9%
                                 | 
| 7 | N/A | 400 | |
| 8 | Invalid | 13 | |
| 9 | Missing | 240 |