Evidence map›Paper›PMID 33198663›Full record

ArticleBMC pregnancy and childbirth2020

CRAFT (Cerclage after full dilatation caesarean section): protocol of a mixed methods study investigating the role of previous in-labour caesarean section in preterm birth risk.

Naomi Carlisle, Agnieszka Glazewska-Hallin, Lisa Story, Jenny Carter, Paul T Seed, Natalie Suff, Lucie Giblin, Jana Hutter, Raffaele Napolitano, Mary Rutherford and 5 more

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in BMC pregnancy and childbirth, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Escalating caesarean deliveries and the impact on subsequent preterm birth.European journal of obstetrics & gynecology and reproductive biology: X · 2025
    Review
  3. Preterm Birth: Screening and Prediction.International journal of women's health · 2023
    Review
  4. Reproducibility of assessment of full-dilatation Cesarean section scar in women undergoing second-trimester screening for preterm birth.Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology · 2022
    Article
  5. Prior term delivery increases risk of subsequent recurrent preterm birth: An unexpected finding.The Australian & New Zealand journal of obstetrics & gynaecology · 2022
    Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 4 institutions in 1 country.

Naomi CarlisleDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK. craftstudy@kcl.ac.uk.ORCID http://orcid.org/0000-0001-8943-8700
Agnieszka Glazewska-HallinDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK. craftstudy@kcl.ac.uk.
Lisa StoryCentre for the Developing Brain, King's College London, 1st Floor South Wing, St Thomas' Hospital, London, SE1 7EH, UK.
Jenny CarterDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
Paul T SeedDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
Natalie SuffDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
Lucie GiblinDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
Jana HutterCentre for the Developing Brain, King's College London, 1st Floor South Wing, St Thomas' Hospital, London, SE1 7EH, UK.
Raffaele NapolitanoElizabeth Garrett Anderson Institute for Women's Health, University College London, Room 244, Medical School Building, Huntley Street, London, WC1E 6AU, UK.
Mary RutherfordCentre for the Developing Brain, King's College London, 1st Floor South Wing, St Thomas' Hospital, London, SE1 7EH, UK.
Daniel C AlexanderDepartment of Computer Science, University College London, Gower Street, London, WC1E 6BT, UK.
Nigel SimpsonDelivery Suite, C Floor, Clarendon Wing, The General Infirmary at Leeds, Belmont Grove, Leeds, LS2 9NS, UK.
Amrita BanerjeeElizabeth Garrett Anderson Institute for Women's Health, University College London, Room 244, Medical School Building, Huntley Street, London, WC1E 6AU, UK.
Anna L DavidElizabeth Garrett Anderson Institute for Women's Health, University College London, Room 244, Medical School Building, Huntley Street, London, WC1E 6AU, UK.
Andrew H ShennanDepartment of Women and Children's Health, School of Life Course Sciences, King's College London, 10th Floor, North Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
St Thomas' Hospital · GBUniversity College London · GBLeeds General Infirmary · GBUCL Biomedical Research Centre · GB

Funding

ARC South London (NIHR) supported byBiomedical Research Centre at Guy's and St Thomas' NHS Foundation Trust and King's College London supported byThe Jon Moulton Charity Trust 261294Tommy's supported byUCLH Biomedical Research Centre supported by
6 · The paper itself

Abstract

backgroundFull dilatation caesarean sections are associated with recurrent early spontaneous preterm birth and late miscarriage. The risk following first stage caesarean sections, are less well defined, but appears to be increased in late-first stage of labour. The mechanism for this increased risk of late miscarriage and early spontaneous preterm birth in these women is unknown and there are uncertainties with regards to clinical management. Current predictive models of preterm birth (based on transvaginal ultrasound and quantitative fetal fibronectin) have not been validated in these women and it is unknown whether the threshold to define a short cervix (≤25 mm) is reliable in predicting the risk of preterm birth. In addition the efficacy of standard treatments or whether benefit may be derived from prophylactic interventions such as a cervical cerclage is unknown.

methodsThere are three distinct components to the CRAFT project (CRAFT-OBS, CRAFT-RCT and CRAFT-IMG). CRAFT-OBS: Observational Study; To evaluate subsequent pregnancy risk of preterm birth in women with a prior caesarean section in established labour. This prospective study of cervical length and quantitative fetal fibronectin data will establish a predictive model of preterm birth. CRAFT-RCT: Randomised controlled trial arm; To assess treatment for short cervix in women at high risk of preterm birth following a fully dilated caesarean section. CRAFT-IMG: Imaging sub-study; To evaluate the use of MRI and transvaginal ultrasound imaging of micro and macrostructural cervical features which may predispose to preterm birth in women with a previous fully dilated caesarean section, such as scar position and niche. DISCUSSION: The CRAFT project will quantify the risk of preterm birth or late miscarriage in women with previous in-labour caesarean section, define the best management and shed light on pathological mechanisms so as to improve the care we offer to women and their babies.

trial registrationCRAFT was prospectively registered on 25th November 2019 with the ISRCTN registry ( https://doi.org/10.1186/ISRCTN15068651 ).

Indexed as

Abortion, SpontaneousCerclage, CervicalCesarean SectionDilatationFemaleHumansLabor, ObstetricLabor Stage, FirstMulticenter Studies as TopicObservational Studies as TopicPregnancyPremature BirthProspective StudiesRandomized Controlled Trials as TopicCaesarean sectionCervixDeliveryFull dilatationFully dilatedLabour caesareanLate miscarriagePreterm birth

Identifiers

PMID33198663
PMCPMC7667480
OpenAlexW3106371637

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.