| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, folic acid | 286 |
6.6%
|
| 2 | Yes, iron | 534 |
12.3%
|
| 3 | Both | 508 |
11.7%
|
| 4 | None | 3002 |
69.3%
|
| Sysmiss | 7992 |