Evidence map›Paper›PMID 22703475›Full record

Trial reportBJOG : an international journal of obstetrics and gynaecology2012

Should cervical favourability play a role in the decision for labour induction in gestational hypertension or mild pre-eclampsia at term? An exploratory analysis of the HYPITAT trial.

P Tajik, K van der Tuuk, C M Koopmans, H Groen, M G van Pampus, P P van der Berg, J A van der Post, A J van Loon, C J M de Groot, A Kwee and 13 more

Open access · bronzeAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in BJOG : an international journal of obstetrics and gynaecology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
2.5field-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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 38 citations in OpenAlex.

  1. Delivery or expectant management for prevention of adverse maternal and neonatal outcomes in hypertensive disorders of pregnancy: an individual participant data meta-analysis.Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology · 2019
    Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Timing of delivery and pregnancy outcomes in women with gestational diabetes.American journal of obstetrics and gynecology · 2016
    Article
  9. Review
  10. 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

23 authors at 14 institutions in 1 country.

P TajikAcademic Medical Centre, Amsterdam, the Netherlands. p.tajik@amc.uva.nl
K van der Tuuk
C M Koopmans
H Groen
M G van Pampus
P P van der Berg
J A van der Post
A J van Loon
C J M de Groot
A Kwee
A J M Huisjes
E van Beek
D N M Papatsonis
K W Bloemenkamp
G A van Unnik
M Porath
R J Rijnders
R H Stigter
K de Boer
H C Scheepers
A H Zwinderman
P M Bossuyt
B W Mol
Amsterdam UMC Location University of Amsterdam · NLUniversity Medical Center Groningen · NLRadboud University Nijmegen · NLAmphia Ziekenhuis · NLAmsterdam UMC Location Vrije Universiteit Amsterdam · NLDeventer Ziekenhuis · NLDiakonessenhuis hospital · NLGelre Hospitals · NLJeroen Bosch Ziekenhuis · NLLeiden University Medical Center · NLMartini Ziekenhuis · NLRijnstate Hospital · NLSt. Antonius Ziekenhuis · NLUniversity Medical Center Utrecht · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine whether cervical favourability (measured by cervical length and the Bishop score) should inform obstetricians' decision regarding labour induction for women with gestational hypertension or mild pre-eclampsia at term.

designA post hoc analysis of the Hypertension and Pre-eclampsia Intervention Trial At Term (HYPITAT).

settingObstetric departments of six university and 32 teaching and district hospitals in the Netherlands. POPULATION: A total of 756 women diagnosed with gestational hypertension or pre-eclampsia between 36 + 0 and 41 + 0 weeks of gestation randomly allocated to induction of labour or expectant management.

methodsData were analysed using logistic regression modelling.

main outcome measuresThe occurrence of a high-risk maternal situation defined as either maternal complications or progression to severe disease. Secondary outcomes were caesarean delivery and adverse neonatal outcomes.

resultsThe superiority of labour induction in preventing high-risk situations in women with gestational hypertension or mild pre-eclampsia at term varied significantly according to cervical favourability. In women who were managed expectantly, the longer the cervix the higher the risk of developing maternal high-risk situations, whereas in women in whom labour was induced, cervical length was not associated with a higher probability of maternal high-risk situations (test of interaction P = 0.03). Similarly, the beneficial effect of labour induction on reducing the caesarean section rate was stronger in women with an unfavourable cervix.

conclusionAgainst widely held opinion, our exploratory analysis showed that women with gestational hypertension or mild pre-eclampsia at term who have an unfavourable cervix benefited more from labour induction than other women.

trial registrationThe trial has been registered in the clinical trial register as ISRCTN08132825.

Indexed as

AdultCervical RipeningCesarean SectionDecision MakingDelivery, ObstetricFemaleGestational AgeHumansHypertension, Pregnancy-InducedLabor, InducedPre-EclampsiaPregnancyPregnancy, High-RiskPregnancy Outcome

Identifiers

PMID22703475
PMCPMC3440582
OpenAlexW2153624742

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.