| Value | Category | Cases | |
|---|---|---|---|
| 44 | No date is recorded (44) | 37 |
41.6%
|
| 66 | Date is not legible (66) | 12 |
13.5%
|
| 95 | Mother doesn't remember date | 40 |
44.9%
|
| Sysmiss | 548 |