Vitamin D Standardization Program (VDSP)
Bibliographic record
Abstract
The Vitamin D Standardization Program (VDSP) was begun to correct widespread variation in 25‐hydroxyvitamin D [25(OH)D] lab results that confounds international efforts to develop evidence‐based clinical & public health guidelines. Its objectives are to: (1) standardize measurement of total 25(OH)D in national health surveys world‐wide by linking them to the NIST reference measurement procedure (RMP); (2) study differences in 25(OH)D among those surveys; & (3) expand standardization services to include assay manufacturers & clinical & research labs. Measurands addressed in the VDSP are total 25(OH)D, 25(OH)D 2 , 25(OH)D 3 & 3‐epi‐25(OH)D 3. A formal laboratory standardization program will be implemented using procedures similar to those used in CDC Hormone Standardization (HoSt) Program. ODS provides overall coordination. A VDSP Coordinating Center has been established at CDC. NIST and Gent University (Dr. Thienpont), Belgium are the reference labs for the VDSP. Currently, VDSP is conducting an inter‐laboratory comparison study that includes labs from eight national surveys (Australia, Canada, Germany, Ireland, Mexico, South Korea, UK & US) as well as research labs & assay manufacturers to assess measurement variability in currently used assays. Data from this study will be used to create master equations to facilitate the conversion of already existing data from national health surveys to the NIST RMP.
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 distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".