| Value | Category | Cases | |
|---|---|---|---|
| -888 | Other: specify | 0 | 
                                    
                                    0%
                                 | 
| 1 | Daily | 8 | 
                                    
                                    6.7%
                                 | 
| 2 | Once a week | 15 | 
                                    
                                    12.6%
                                 | 
| 3 | Twice a month | 21 | 
                                    
                                    17.6%
                                 | 
| 4 | Monthly | 53 | 
                                    
                                    44.5%
                                 | 
| 5 | As necessary | 22 | 
                                    
                                    18.5%
                                 | 
| Sysmiss | 12 |