Evidence map›Paper›PMID 26412012›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2016

Risk factors associated with preterm birth after a prior term delivery.

L F Wong, J Wilkes, K Korgenski, M W Varner, T A Manuck

Open access · greenAbstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 4 pooled it
2.6field-weighted citation impact, top 11% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 4 syntheses or guidelines pooled it, 53 citations in OpenAlex.

  1. Pooled it
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  5. Article
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  8. Prior term delivery increases risk of subsequent recurrent preterm birth: An unexpected finding.The Australian & New Zealand journal of obstetrics & gynaecology · 2022
    Article
  9. Article
  10. Article
  11. Risk of preterm birth after prior term cesarean.BJOG : an international journal of obstetrics and gynaecology · 2020
    Article
  12. Review
  13. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

L F WongDepartment of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT, USA. luchin.wong@gmail.com.
J WilkesDepartment of Pediatrics, University of Utah, Salt Lake City, UT, USA.
K KorgenskiDepartment of Pediatrics, University of Utah, Salt Lake City, UT, USA.
M W VarnerDepartment of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT, USA.
T A ManuckDepartment of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT, USA.
Intermountain Healthcare · USUniversity of Utah · US

Funding

University of Utah Center for Clinical and Translational ScienceUL1TR001067 · NCATS · UNIVERSITY OF UTAH · PI DERE, WILLARD H., HESS, RACHEL · 2013 to 2017
$19.8M
University of Utah Center for Clinical and Translational Science-UL1UL1TR000105 · NCATS · UNIVERSITY OF UTAH · PI MCCLAIN, DONALD A. · 2012 to 2013
$5.1M
Pharmacogenomics of Preterm Birth Prevention and TreatmentK23HD067224 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI MANUCK, TRACY A. · 2011 to 2015
$661k
NCATS NIH HHS UL1 TR000105NCATS NIH HHS UL1 TR001067NICHD NIH HHS K23 HD067224
6 · The paper itself

Abstract

objectiveThe objective of this study was to assess the presence of newly acquired preterm birth (PTB) risk factors among primiparous women with no prior history of PTB.

designCase-control study.

settingDeliveries occurring within a large healthcare system from 2002 to 2012. POPULATION: Women with their first two consecutive pregnancies carried to ≥20(0/7)  weeks' gestation.

methodsThose delivering the first pregnancy at term and the second preterm ≥20(0/7) and <37(0/7)  weeks (term-preterm cases) were compared with women with a term birth in their first two pregnancies (term-term controls). Social factors with the potential to change between the first and second pregnancies and intrapartum labour characteristics in the first pregnancy were compared between cases and controls.

main outcome measuresRisk factors for term-preterm sequence.

resultsAbout 38 215 women met inclusion criteria; 1353 (3.8%) were term-preterm cases. Cases and controls were similar with regard to race/ethnicity and maternal age at the time of the first and second deliveries. Cases delivered their second pregnancy approximately 3 weeks earlier (35.7 versus 39.1, P < 0.001). In multivariable models accounting for known PTB risk factors, women with a caesarean delivery in the first pregnancy [adjusted odds ratio (aOR) = 2.20; 95% confidence interval (CI) 1.57-3.08], new tobacco use (aOR = 2.33; 95% CI 1.61-3.38), and an interpregnancy interval <18 months (aOR = 1.37; 95% CI 1.21-1.55) were at increased risk of term-preterm sequence.

conclusionCaesarean delivery in the first pregnancy, new tobacco use, and short interpregnancy interval <18 months are significant risk factors for term-preterm sequence. Women should receive postpartum counselling regarding appropriate interpregnancy interval and cessation of tobacco use. TWEETABLE ABSTRACT: Caesarean delivery in the 1st pregnancy is a significant risk factor for preterm birth following a term delivery.

Indexed as

Birth IntervalsBirth OrderTerm BirthAdultCase-Control StudiesCesarean SectionFemaleHumansMaternal AgeMultivariate AnalysisOdds RatioPregnancyPremature BirthRisk FactorsTime FactorsTobacco UseCaesarean deliveryintrapartumpreterm birthtobacco

Identifiers

PMID26412012
PMCPMC4809794
OpenAlexW2104245763

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.