| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 1 | 
                                    
                                    14.3%
                                 | 
| 2 | Weeks | 2 | 
                                    
                                    28.6%
                                 | 
| 3 | Months | 4 | 
                                    
                                    57.1%
                                 | 
| Sysmiss | 858 |