| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | About once every two or three months | 87 | 
                                    
                                    3.6%
                                 | 
| 2 | About once a month | 138 | 
                                    
                                    5.8%
                                 | 
| 3 | Two or three times a month | 343 | 
                                    
                                    14.3%
                                 | 
| 4 | About once a week | 206 | 
                                    
                                    8.6%
                                 | 
| 5 | Several times a week | 346 | 
                                    
                                    14.4%
                                 | 
| 6 | Every day | 64 | 
                                    
                                    2.7%
                                 | 
| 7 | Not applicable | 1209 | 
                                    
                                    50.4%
                                 | 
| 8 | Refused | 2 | 
                                    
                                    0.1%
                                 | 
| 9 | Don’t know | 5 | 
                                    
                                    0.2%
                                 |