ArticlePloS one2019
Association between time of delivery and poor perinatal outcomes -An evaluation of deliveries in a tertiary hospital, South-east Nigeria.
Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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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
6 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.
- Effect of off-hours admission on in-hospital mortality in sub-Saharan Africa: a systematic review and meta-analysis.Journal of health, population, and nutrition · 2026Pooled it
- The effect of nighttime or weekend births on perinatal outcomes in Africa, 2025: Systematic review and meta-analysis.Maternal health, neonatology and perinatology · 2026Review
- Circadian rhythm characteristics of spontaneous labor onset in full-term primiparas and its impact on maternal and neonatal outcomes.BMC pregnancy and childbirth · 2026Article
- Influence of time of birth in early neonatal mortality and morbidity: retrospective cohort study.BMJ paediatrics open · 2025Article
- The Effect of Birth Hour on Neonatal Morbidity and Mortality in Very-Low Birth Weight Infants in a Teaching Hospital.Turkish archives of pediatrics · 2023Article
- Office hours and caesarean section: systematic review and Meta-analysis.Research in health services & regions · 2022Review
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesNigeria account for a significant proportion of adverse perinatal outcome. Nigerian studies assessing impact of time of delivery on perinatal outcome are scarce. This study evaluates any associations between time of delivery and perinatal outcome.
methodsThis was a cross-sectional study at the Federal Teaching Hospital, Abakaliki from 01 January 2016 to 30 June 2018. Data were analysed with IBM SPSS version 25.0.
resultsA total of 4,556 deliveries were analysed. Majority (72.2%) delivered on week days and 27.8% on weekends. Over 90% had 1st and 5th minutes Apgar scores ≥7. There was statistical difference in NICU admission between morning and evening hours (p = 0.009) but not between morning and night hours (p = 0.795). ENND during evening was twice higher (1.2%) than morning (0.5%); p = 0.047 and night hours (0.6%); p = 0.623.There was no difference in the risk of fresh stillbirths between morning and evening (p = 0.560), as well as morning and night hours (p = 0.75), there was also no difference in fresh stillbirths between week days and weekends (p = 0.895). There was no difference in low Apgar scores at 1st minute between morning and evening (p = 0.053) and night (p = 0.221), and between weekdays and weekends (p = 0.524). Similarly, there was no difference in low 5th minute Apgar scores between morning and evening (p = 0.165) and night (p = 0.944), as well as between week days and weekends (p = 0.529). However, ENND was twice (p = 0.085) and 1.3 times higher (p = 0.526) for evening and night hours respectively, while there was no difference between weekends and week days (p = 0.652).
conclusionNICU admission and ENND were commoner during evening hours. However, work hours did not affect the rate of stillbirth and low Apgar scores during weekdays and weekends. It is pertinent for each obstetric unit to identify and modify factors responsible for unfavourable outcomes during various shifts, with the aim of improving perinatal health.
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