Why do nulliparous teenagers have the highest rate of unassisted vaginal deliveries compared to their older counterparts?

Vaginal births in primiparas without obstetrical assistance occur preferably at younger ages with a regular negative linear trend, <i>p</i> < .001 until the ages 40+. The indication AFM for c-sections also had a negative linear trend, <i>p</i> = .0004, while OL as indication for c-sections represented a minority in teenagers (below breech presentation). In teenagers, the higher rate of unassisted vaginal births may be due to an intrinsic biologic cause (uterine contractility).

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Publication Details

Journal
The Journal of Maternal-Fetal & Neonatal Medicine
Published
2025-06-08
DOI
https://doi.org/10.1080/14767058.2025.2503509
Citations
1
Primary Topic
Maternal and Perinatal Health Interventions
Type
article
Field-Weighted Citation Impact
2.06
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Why do nulliparous teenagers have the highest rate of unassisted vaginal deliveries compared to their older counterparts?

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article en
1 citations

Abstract

Vaginal births in primiparas without obstetrical assistance occur preferably at younger ages with a regular negative linear trend, <i>p</i> < .001 until the ages 40+. The indication AFM for c-sections also had a negative linear trend, <i>p</i> = .0004, while OL as indication for c-sections represented a minority in teenagers (below breech presentation). In teenagers, the higher rate of unassisted vaginal births may be due to an intrinsic biologic cause (uterine contractility).

The Journal of Maternal-Fetal & Neonatal MedicineVol. 38(1)
Lyell McEwin Hospital (AU), Centre Hospitalier Universitaire de La Réunion (RE), Écologie Marine Tropicale des Océans Pacifique et Indien (RE), The University of Adelaide (AU)
Gender equality
Openalex Percentile: Top 15%
Maternal and Perinatal Health Interventions
2.06
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