| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | About once every two or three months | 114 | 
                                    
                                    9.5%
                                 | 
| 2 | About once a month | 82 | 
                                    
                                    6.8%
                                 | 
| 3 | Two or three times a month | 139 | 
                                    
                                    11.6%
                                 | 
| 4 | About once a week | 143 | 
                                    
                                    11.9%
                                 | 
| 5 | Several times a week | 453 | 
                                    
                                    37.8%
                                 | 
| 6 | Every day | 227 | 
                                    
                                    18.9%
                                 | 
| 7 | Not applicable | 41 | 
                                    
                                    3.4%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 1 | 
                                    
                                    0.1%
                                 |