ArticleJournal of perinatology : official journal of the California Perinatal Association2019
Association between time of day and performance, indications, and outcomes of obstetric interventions among nulliparous women delivering at term.
Article in Journal of perinatology : official journal of the California Perinatal Association, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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
5 citing papers in PubMed.
- The effect of nighttime or weekend births on perinatal outcomes in Africa, 2025: Systematic review and meta-analysis.Maternal health, neonatology and perinatology · 2026Review
- Time of Birth and the Risk of Adverse Maternal and Neonatal Outcomes-A Retrospective Cohort Study.Journal of clinical medicine · 2024Article
- Office hours and caesarean section: systematic review and Meta-analysis.Research in health services & regions · 2022Review
- Busy day effect on the use of obstetrical interventions and epidural analgesia during labour: a cross-sectional register study of 601 247 deliveries.BMC pregnancy and childbirth · 2022Article
- A multimodal model in the prediction of the delivery mode using data from a digital twin-empowered labor monitoring system.Digital healthArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
objectiveThe objective of this study is to determine whether there is an association between delivery time and obstetric interventions, as well as maternal and perinatal outcomes. STUDY
designRetrospective cohort study of nulliparous women delivering singleton, vertex, live births at ≥37 weeks gestation at a single center from 2014 to 2015. Nighttime deliveries were designated as those occurring between 18:00 and 05:59 h. The primary outcomes were obstetrical interventions (cesarean delivery, operative vaginal delivery, episiotomy). Secondary outcomes included indications for operative deliveries, as well as maternal and perinatal outcomes.
resultsOf 7691 women eligible for inclusion, 3707 (48.2%) delivered during the nighttime. Women who experienced nighttime deliveries had no demographic or clinical differences compared with women delivering during the daytime. Women delivering during the nighttime had greater odds of cesarean delivery (OR 1.27, 95% CI 1.14-1.43) and operative vaginal delivery (OR 1.83, 95% CI 1.20-2.78). Women who delivered at night were also more likely to have neonates with a 5 min Apgar score <7 (OR 1.59, 95% CI 1.08-2.32) and umbilical artery pH < 7.0 (OR 1.76, 95% CI 1.18-2.63). There were no differences observed in any of the other outcomes examined.
conclusionsDelivery during the nighttime is associated with alterations in some obstetric interventions and perinatal outcomes.
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.