| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one time per week | 48 | 
                                    
                                    1.1%
                                 | 
| 2 | 1 time per week | 68 | 
                                    
                                    1.5%
                                 | 
| 3 | 2 times per week | 164 | 
                                    
                                    3.7%
                                 | 
| 4 | 1 time every 2 days | 154 | 
                                    
                                    3.5%
                                 | 
| 5 | Once a day | 1060 | 
                                    
                                    23.9%
                                 | 
| 6 | Twice a day | 1543 | 
                                    
                                    34.8%
                                 | 
| 7 | Continually | 1400 | 
                                    
                                    31.5%
                                 | 
| 9 | DK | 2 | 
                                    
                                    0%
                                 | 
| Sysmiss | 22155 |