| Value | Category | Cases | |
|---|---|---|---|
| 1 | ...week | 223 | 
                                    
                                    33.5%
                                 | 
| 2 | ...month | 347 | 
                                    
                                    52.1%
                                 | 
| 3 | ...year | 96 | 
                                    
                                    14.4%
                                 | 
| Sysmiss | 171 |