Use of folic acid | (N) | Folate levels | ||||
Ever taken | Took before conception | Taking now | Median | IQR1-150 | Range | |
Serum Folate levels (nmol/l) | ||||||
No | No | No | (379) | 13 | 9–20 | 2–73 |
Yes | No | No | (271) | 18 | 12–27 | 4–126 |
Yes | Yes | No | (128) | 24 | 17–34 | 4–72 |
Yes | No | Yes | (404) | 31 | 21–47 | 3–344 |
Yes | Yes | Yes | (247) | 40 | 29–52 | 10–442 |
Red cell folate levels (nmol/l) | ||||||
No | No | No | (370) | 358 | 270–471 | 7–1206 |
Yes | No | No | (269) | 462 | 367–596 | 0–3032 |
Yes | No | Yes | (393) | 492 | 374–664 | 23–2411 |
Yes | Yes | No | (122) | 658 | 444–816 | 150–1826 |
Yes | Yes | Yes | (241) | 693 | 553–877 | 45–1876 |
↵1-150 IQR = interquartile range.