Association of Umbilical Cord Blood Gas Values With Mortality and Severe Neurologic Injury in Preterm Neonates <29 Weeks’ Gestation: A National Cohort Study
Bibliographic record
Abstract
( Am J Obstet Gynecol. 2022;227:85.e1–10) The acid-base status of a neonate at the time of birth is determined through analysis of umbilical cord blood gas values. Deranged umbilical cord arterial (UA) and umbilical cord venous (UV) blood gas values can be linked to poor neonatal outcomes. Previous studies have found an association between a UA or UV pH value of <7.0 and neonatal mortality. However, the relationship between umbilical cord blood gas values and adverse outcomes, specifically in preterm neonates born before 29 weeks gestation, is not clear. This study aimed to explore the association between umbilical cord blood gas values with neonatal mortality and severe neurological injury (SNI) in infants born before 29 weeks gestation.
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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 | 0.002 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| 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".