ArticleBMC pregnancy and childbirth2025
The relationship between parity, delivery mode, maternal age at delivery, and bone mineral density: a cross-sectional study.
Article in BMC pregnancy and childbirth, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAs a neuro-psycho-social event, delivery can significantly impact maternal health. However, the association between childbirth and maternal bone health remains unclear, warranting further investigation.
methodsOur study was based on data from the National Health and Nutrition Examination Survey (NHANES) (2005-2020). We employed propensity score matching, Welch's two-sample t-test, linear mixed models, and partial correlation analysis to assess the relationship between delivery-related factors (parity, delivery mode, maternal age at delivery) and bone mineral density (BMD) of the lumbar spine and femoral neck.
resultsWe obtained 5726 participants. Welch's two-sample t-test showed that delivered subjects had lower mean BMD of the lumbar spine and femoral neck. The data from the linear mixed model showed a decrease in BMD of femoral neck and a decrease in BMD of lower spine in subjects who have delivered compared to those who had not. The same analyses showed lower BMD. Partial correlation analysis showed a negative correlation between age at delivery and BMD in women who gave delivery vaginally.
conclusionsParity and advanced maternal age at delivery are associated with decreased BMD. Notably, vaginal delivery is linked to reduced femoral neck BMD, a novel finding highlighting the potential biomechanical impact of this delivery mode.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.