B vitamin status and concentrations of homocysteine in Canadian women of childbearing age
Bibliographic record
Abstract
Mandatory folic acid fortification of cereal‐grain products was introduced in 1998 to decrease the risk of having children with neural tube defects. Little is known about the vitamin B status of Canadian women of childbearing age after folic acid fortification era. The study objectives were to investigate folate, vitamin B6 and B12 status, and total homocysteine status, to investigate the existing pattern, and to estimate the contribution of folate intakes. Using a cross‐sectional study design, a fasting blood sample was obtained from 95 women at child bearing age. Dietary and supplemental intakes for nutrient were assessed. No women had biochemical evidence of folate deficiency, 5%six of ninety five of women were deficient in vitamin B6 and 3% had low vitamin B12, Hyperhomocysteinaemia > 12.0 μmol/l occurred in 2.1% of women. Dietary intake mean ± SD of food folic acid was 96 ± 63.9 μg/d, supplemental folic acid 94.9 ± 189.3 μg/d, the intake from natural folate 314.4± 134.3 μg/d, and the total intakes as DFES was 645.7±368.4 μg DFEs/d, derived mainly form bakery products (28%), vegetables (18%), pasta and rice (15%), juices (13%), milk and dairy products(6%), ready to eat cereal (5%). These data suggest that women of childbearing age are achieving positive folate balance and RBC concentrations associated with reduced risk of NTD following FA fortification of the food supply. Intakes of folic acid from fortified foods are within the level originally predicted for the fortification. Supported by Canadian Egg Marketing Agency and ARDI
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".