ArticleAnnals of epidemiology2014
Absence of circadian rhythms of preterm premature rupture of membranes and preterm placental abruption.
Article in Annals of epidemiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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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.
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Who cites it
6 citing papers in PubMed.
- Circadian characteristics of term and preterm labors.Scientific reports · 2024Article
- Novel statistical approach for assessing the persistence of the circadian rhythms of social activity from telephone call detail records in older adults.Scientific reports · 2020Article
- Circadian Variation in the Onset of Placental Abruption.Journal of pregnancy · 2017Article
- Placental genetic variations in circadian clock-related genes increase the risk of placental abruption.International journal of molecular epidemiology and genetics · 2016Article
- A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data.Journal of visualized experiments : JoVE · 2015Article
- Article
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Authors and funding
8 authors.
Funding
Abstract
purposeData regarding circadian rhythm in the onset of spontaneous preterm premature rupture of membranes (PROM) and placental abruption (PA) cases are conflicting. We modeled the time of onset of preterm PROM and PA cases and examined if the circadian profiles varied based on the gestational age at delivery.
methodsWe used parametric and nonparametric methods, including trigonometric regression in the framework of generalized linear models, to test the presence of circadian rhythms in the time of onset of preterm PROM and PA cases among 395 women who delivered a singleton between 2009 and 2010 in Lima, Peru.
resultsWe found a diurnal circadian pattern, with a morning peak at 07:32 AM (95% confidence interval, 05:46 AM–09:18 AM) among moderate preterm PROM cases (P value < .001), and some evidence of a diurnal circadian periodicity among PA cases in term infants (P value = .067). However, we did not find evidence of circadian rhythms in the time of onset of extremely or very preterm PROM (P value = .259) and preterm PA (P value = .224).
conclusionsThe circadian rhythms of the time of onset of preterm PROM and PA cases varied based on gestational weeks at delivery. Although circadian rhythms were presented among moderate preterm PROM and term PA cases, there was no evidence of circadian rhythms among preterm PA and very or extremely preterm PROM cases, underlying other mechanisms associated with the time of onset.
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