Perinatal and Maternal Morbidity and Mortality Among Term Singletons Following Midcavity Operative Vaginal Delivery Versus Cesarean Delivery
Bibliographic record
Abstract
( BJOG . 2018;125:693–702) Recently, to reduce the cesarean delivery rate, the use of operative vaginal delivery has been advocated by the American College of Obstetricians and Gynecologists and the Society for Maternal-Fetal Medicine. There is uncertainty, however, in the balance of risks and benefits between cesarean delivery and operative vaginal delivery. Previous research has lacked information on pelvic station, a measure of the descent of the fetal head with respect to the maternal ischial spines. Operating at the midcavity station requires the greatest skill compared with outlet or lowcavity forceps procedures. This study aimed to quantify the effect of operative vaginal delivery at midcavity station on maternal and perinatal mortality and morbidity compared with cesarean delivery.
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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 | 0.000 | 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".