ArticleJournal of perinatology : official journal of the California Perinatal Association2015
Timing of induction of labor and association with nighttime delivery: a retrospective cohort.
Article in Journal of perinatology : official journal of the California Perinatal Association, 2015. 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
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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
5 citing papers in PubMed, 9 citations in OpenAlex.
- Time of day of induction impacts the total duration of labor.American journal of obstetrics & gynecology MFM · 2026Article
- A model to predict delivery time following induction of labor at term with a dinoprostone vaginal insert: a retrospective study.Irish journal of medical science · 2024Observational
- Article
- Maternal childbirth experience and time of delivery: a retrospective 7-year cohort study of 105 847 parturients in Finland.BMJ open · 2021Article
- A mathematical model to predict mean time to delivery following cervical ripening with dinoprostone vaginal insert.Scientific reports · 2019Observational
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo assess the risk of nighttime delivery associated with timing and method of labor induction. STUDY
designWe reviewed records of 692 patients undergoing full, late or post-term labor induction at two large hospitals. Primary independent variables were start time (morning or evening) and method (prostaglandin or oxytocin). Relative risk was assessed for the primary outcome of nighttime delivery.
resultTwo hundred and ninety-seven (42.9%) patients experienced nighttime delivery. The relative risk of nighttime delivery adjusted for age in multiparous women using oxytocin in the morning compared with oxytocin inductions in the evening was 0.31 (95% confidence interval (CI): 0.22 to 0.45). Among nulliparous women in the same group, the adjusted relative risk was 0.65 (95% CI: 0.36 to 1.19). For prostaglandin inductions, there was no difference in the risk of nighttime delivery based on timing of the induction in the evening (relative risk: 0.89; 95% CI: 0.71 to 1.10).
conclusionThe method used and the time at which induction is started affect risk of nighttime delivery. For multiparous patients receiving oxytocin, morning induction carries lower risk of nighttime delivery. For prostaglandins, timing of initiation did not affect risk of nighttime delivery.
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