| Value | Category | Cases | |
|---|---|---|---|
| 44 | No date is recorded (44) | 80 |
44.7%
|
| 66 | Date is not legible (66) | 24 |
13.4%
|
| 95 | Mother doesn't remember date | 75 |
41.9%
|
| Sysmiss | 458 |