| Value | Category | Cases | |
|---|---|---|---|
| -998 | -98Other: specify | 4 | 
                                    
                                    3.3%
                                 | 
| 1 | Daily | 7 | 
                                    
                                    5.8%
                                 | 
| 2 | Once a week | 26 | 
                                    
                                    21.5%
                                 | 
| 3 | Twice a month | 29 | 
                                    
                                    24%
                                 | 
| 4 | Monthly | 27 | 
                                    
                                    22.3%
                                 | 
| 5 | As necessary | 28 | 
                                    
                                    23.1%
                                 | 
| Sysmiss | 10 |