Bibliographic record
Abstract
Recent studies support the role of vitamin D in human reproduction and suggest that vitamin D levels predict reproductive success following in vitro fertilization (IVF).2,3 Vitamin D is a prohormone that is acquired exogenously from the diet or produced endogenously in the skin. Vitamin D is metabolized primarily in the liver to 25-hydroxy-vitamin D (25[OH]D), the serum concentration of which can be used as an indicator of vitamin D status. The classification of vita-min D status varies in the literature,2,4,5 and because the rela-tion between vitamin D and fertility has only recently been investigated, no specific cut-off values have been referenced in the literature. However, a Canadian guideline defined vitamin D deficiency as levels below 25 nmol/L, insufficiency as levels between 25 and 74 nmol/L, and sufficiency as levels of 75 nmol/L and greater.6 Lower levels of vitamin D (< 75 nmol/L)
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.011 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.004 | 0.002 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.005 | 0.005 |
| Insufficient payload (model declined to judge) | 0.634 | 0.317 |
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".