| Value | Category | Cases | |
|---|---|---|---|
| 1 | MONTHS | 226 | 
                                    
                                    5.3%
                                 | 
| 2 | YEARS | 1054 | 
                                    
                                    24.9%
                                 | 
| 9 | SPECIAL | 550 | 
                                    
                                    13%
                                 | 
| Sysmiss | 2405 | 
                                    
                                    56.8%
                                 |