Evidence map›Paper›PMID 31883402›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2020

Risk of preterm birth after prior term cesarean.

L Visser, C Slaager, B M Kazemier, A L Rietveld, M A Oudijk, Cjm de Groot, B W Mol, M A de Boer

Registry-linked trialAbstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04554745 (The Assessment of Cervical Length and Thickness of Cesarean Section Scar as Predictors for Preterm Labor in Patients With Previous Cesarean Section), which is not on this map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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.

NCT04554745 nacompletednot on this mapstarted 2021, after this paper: background citation

The Assessment of Cervical Length and Thickness of Cesarean Section Scar as Predictors for Preterm Labor in Patients With Previous Cesarean Section

TypeinterventionalSponsorAssiut UniversityRan2021 to 2022Enrolled260ConditionsPreterm LaborArmsUltrasound
3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Article
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  6. Escalating caesarean deliveries and the impact on subsequent preterm birth.European journal of obstetrics & gynecology and reproductive biology: X · 2025
    Review
  7. Article
  8. Article
  9. Article
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  11. Article
  12. Article
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  15. Article
  16. Preterm Labor, a Syndrome Attributed to the Combination of External and Internal Factors.Maternal-fetal medicine (Wolters Kluwer Health, Inc.) · 2022
    Review
  17. Risk of preterm birth after prior term cesarean.BJOG : an international journal of obstetrics and gynaecology · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

L VisserDepartment of Obstetrics and Gynaecology Located at the Boelelaan, Amsterdam University Medical Centre, Amsterdam, the Netherlands.ORCID https://orcid.org/0000-0001-7670-9305
C SlaagerDepartment of Obstetrics and Gynaecology, Franciscus Gasthuis en Vlietland, Rotterdam, the Netherlands.
B M KazemierDepartment of Obstetrics and Gynaecology Located at the Meibergdreef, Amsterdam University Medical Centre, Amsterdam, the Netherlands.
A L RietveldDepartment of Obstetrics and Gynaecology Located at the Boelelaan, Amsterdam University Medical Centre, Amsterdam, the Netherlands.
M A OudijkDepartment of Obstetrics and Gynaecology Located at the Meibergdreef, Amsterdam University Medical Centre, Amsterdam, the Netherlands.ORCID https://orcid.org/0000-0001-8672-4365
Cjm de GrootDepartment of Obstetrics and Gynaecology Located at the Boelelaan, Amsterdam University Medical Centre, Amsterdam, the Netherlands.
B W MolDepartment of Obstetrics and Gynaecology, Monash University, Melbourne, Vic., Australia.ORCID https://orcid.org/0000-0001-8337-550X
M A de BoerDepartment of Obstetrics and Gynaecology Located at the Boelelaan, Amsterdam University Medical Centre, Amsterdam, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo determine the risk of overall preterm birth (PTB) and spontaneous PTB in a pregnancy after a caesarean section (CS) at term.

designLongitudinal linked national cohort study.

settingThe Dutch Perinatal Registry (1999-2009). POPULATION: 268 495 women with two subsequent singleton pregnancies were identified.

methodsA cohort study based on linked registered data from two subsequent pregnancies in the Netherlands.

main outcome measuresThe incidence of overall PTB and spontaneous PTB with subgroup analysis on gestational age at first delivery and type of CS (planned or unplanned).

resultsOf 268 495 women with a singleton first pregnancy who delivered at term, 15.76% (n = 42 328) had a CS. The incidence of PTB in the second pregnancy was 2.79% (n = 1182) in women with a previous CS versus 2.46% (n = 5570) in women with a previous vaginal delivery (adjusted odds ratio [aOR] 1.14, 95% confidence interval [CI] 1.07-1.21). This increased risk is mainly driven by an increased risk of spontaneous PTB after previous CS at term (aOR 1.50, 95% CI 1.38-1.70). Analysis for type of CS compared with vaginal delivery showed an aOR on spontaneous PTB of 1.86 (95% CI 1.58-2.18) for planned CS and an aOR of 1.40 (95% CI 1.24-1.58) for unplanned CS.

conclusionsCS at term is associated with a marginally increased risk of spontaneous PTB in a subsequent pregnancy. TWEETABLE ABSTRACT: Caesarean section at term is associated with a marginally increased risk of spontaneous PTB in a subsequent pregnancy.

Indexed as

Cesarean SectionTerm BirthAdultCohort StudiesDelivery, ObstetricFemaleGestational AgeHumansIncidenceLongitudinal StudiesNetherlandsPregnancyPremature BirthRegistriesRiskCaesarean sectionmode of deliverypreterm birthrisk factorspontaneous preterm birth

Identifiers

PMID31883402
PMCPMC7317970

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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.