| Value | Category | Cases | |
|---|---|---|---|
| -888 | Other: specify | 0 | 
                                    
                                    0%
                                 | 
| 1 | Daily | 1 | 
                                    
                                    1.1%
                                 | 
| 2 | Once a week | 1 | 
                                    
                                    1.1%
                                 | 
| 3 | Twice a month | 5 | 
                                    
                                    5.7%
                                 | 
| 4 | Monthly | 38 | 
                                    
                                    43.7%
                                 | 
| 5 | As necessary | 42 | 
                                    
                                    48.3%
                                 | 
| Sysmiss | 44 |