| Value | Category | Cases | |
|---|---|---|---|
| 1 | days after delivery | 23 | 
                                    
                                    95.8%
                                 | 
| 2 | weeks after delivery | 1 | 
                                    
                                    4.2%
                                 | 
| 9 | special answers | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 15327 |