| Value | Category | Cases | |
|---|---|---|---|
| 1 | Several Times a day | 2 | 
                                
                                1.1%
                             | 
| 2 | Once in a day | 1 | 
                                
                                0.5%
                             | 
| 3 | Several times a week | 0 | 
                                
                                0%
                             | 
| 4 | Once a week | 2 | 
                                
                                1.1%
                             | 
| 5 | Less than once a month | 8 | 
                                
                                4.3%
                             | 
| 6 | Never | 170 | 
                                
                                90.9%
                             | 
| 7 | Refusal | 0 | 
                                
                                0%
                             | 
| 96 | Other | 3 | 
                                
                                1.6%
                             | 
| 98 | DK | 0 | 
                                
                                0%
                             | 
| 99 | NA | 1 | 
                                
                                0.5%
                             |