Pill use in the month before conception linked to risk of low birth weight preterm delivery
Bibliographic record
Abstract
Women who use oral contraceptives just prior to conception may be more likely than nonusers to experience adverse birth outcomes according to a study of health records from the Canadian province of Saskatchewan.1 Those who used the pill within 30 days of their last menstrual period had elevated odds of preterm birth and low birth weight conditions that are associated with infant morbidity and mortality. The researchers examined records from Saskatchewan Health Databases which contain information on 99% of the provinces residents. They obtained data on physician services hospital stays and prescription drug use in the year prior to giving birth for a random sample of 50% of women who had a pregnancy between 1997 and 2000. these outcomes. In an analysis that adjusted for womens socioeconomic and chronic disease status pill use within 30 days of the last menstrual period was positively associated with the occurrence of very low and low birth weight (odds ratios 3.2 and 1.9 respectively) and preterm delivery (1.6). Use 2-3 months prior to the last menstrual period was not associated with adverse birth outcomes. (excerpt)
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.014 | 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".