A possible case of dystocia due to foetal macrosomia at Shuanghuaishu site (3500–2900 BCE), Henan, China
Bibliographic record
Abstract
Abstract Childbirth was a significant factor in ancient female mortality, but relatively few cases of death in childbirth have been reported in the bioarchaeological literature due to challenges of recovery and interpretation. Here, we report a possible case of dystocia from the late Neolithic (3500–2900 BCE) settlement of Shuanghuaishu site (Gongyi City, Henan Province, China). An adult female skeleton was discovered in an inhumation burial with the remains of a foetus in the pelvis. The top of the foetal skull has exited the pelvic outlet, but most of the head remains in the pelvic cavity. The face is oriented away from the mother's spine, indicating that the foetus was in persistent occipitoposterior position. In modern deliveries, this atypical positioning is associated with complications including prolonged labour and excessive maternal bleeding. Long bone measurements indicate that the foetus was large compared with full‐term modern infants. This may indicate foetal macrosomia, which is also associated with prolonged and difficult labour. These indicators suggest that this was a case of dystocia, with the large size and positioning of the foetus leading to obstructed labour and the death of both mother and infant. The presence of some cranial remains outside the pelvic outlet could represent either partial delivery of the head or partial post mortem delivery (coffin birth). This paper provides an example of the interpretive challenges facing researchers investigating reproductive mortality in ancient China and in other past societies.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 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".