| Value | Category | Cases | |
|---|---|---|---|
| 0 | no flag | 3960 | 
                                    
                                    99.3%
                                 | 
| 1 | > interval | 14 | 
                                    
                                    0.4%
                                 | 
| 2 | > interval by 1 mnth | 7 | 
                                    
                                    0.2%
                                 | 
| 3 | > age at death | 8 | 
                                    
                                    0.2%
                                 | 
| 4 | during preg in cal. | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 10957 |