ArticleAmerican journal of perinatology2021
Obesity, Second Stage Duration, and Labor Outcomes in Nulliparous Women.
Article in American journal of perinatology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Evaluating the impact of the second-stage and pushing duration on maternal and neonatal outcomes: a systematic review and meta-analysis.American journal of obstetrics and gynecology · 2025Pooled it
- Mode of delivery among pregnant people with obesity undergoing labor induction in the late preterm period.Pregnancy (Hoboken, N.J.) · 2025Article
- Article
- Inconsistent definitions of prolonged labor in international literature: a scoping review.AJOG global reports · 2024Article
- Put your weight behind it-Effect of body mass index on the active second stage of labour: A retrospective cohort study.BJOG : an international journal of obstetrics and gynaecology · 2022Article
- Retrospective Analysis of the Factors Affecting the Induction of Childbirth in 4350 Women from a Single Center in Warsaw, Poland.International journal of environmental research and public health · 2022Article
- Pregnancy Care for Patients With Super Morbid Obesity.Frontiers in pediatrics · 2022Review
- Effects of labor induction in obesity with delayed pregnancy: A retrospective study based on Chinese obese primipara.Frontiers in endocrinology · 2022Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
objectiveThis study aimed to estimate second stage duration and its effects on labor outcomes in obese versus nonobese nulliparous women. STUDY
designThis was a secondary analysis of a cohort of nulliparous women who presented for labor at term and reached complete cervical dilation. Adjusted relative risks (aRR) were used to estimate the association between obesity and second stage characteristics, composite neonatal morbidity, and composite maternal morbidity. Effect modification of prolonged second stage on the association between obesity and morbidity was assessed by including an interaction term in the regression model.
resultsCompared with nonobese, obese women were more likely to have a prolonged second stage (aRR: 1.48, 95% CI: 1.18-1.85 for ≥3 hours; aRR: 1.65, 95% CI: 1.18-2.30 for ≥4 hours). Obesity was associated with a higher rate of second stage cesarean (aRR: 1.78, 95% CI: 1.34-2.34) and cesarean delivery for fetal distress (aRR: 2.67, 95% CI: 1.18-3.58). Obesity was also associated with increased rates of neonatal (aRR: 1.38, 95% CI: 1.05-1.80), but not maternal morbidity (aRR: 1.06, 95% CI: 0.90-1.25). Neonatal morbidity risk was not modified by prolonged second stage.
conclusionObesity is associated with increased risk of neonatal morbidity, which is not modified by prolonged second stage of labor.
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