| Value | Category | Cases | |
|---|---|---|---|
| 1 | In a period of 3 months | 30 | 
                                    
                                    83.3%
                                 | 
| 2 | In a period over 3 months | 6 | 
                                    
                                    16.7%
                                 | 
| Sysmiss | 53601 |