Evidence map›Paper›PMID 24621110›Full record

ArticleDevelopmental medicine and child neurology2014

Risk of cerebral palsy in relation to pregnancy disorders and preterm birth: a national cohort study.

Håvard Trønnes, Allen J Wilcox, Rolv T Lie, Trond Markestad, Dag Moster

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Developmental medicine and child neurology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04755556 (Effectiveness of Routine Physical Therapy With or Without Home Based Intensive Bimanual Training on Clinical Outcomes in Cerebral Palsy Children), which is not on this map. Cited by 59 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 7 pooled it
9.2field-weighted citation impact, top 1% 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.

NCT04755556 nacompletednot on this mapstarted 2020, after this paper: background citation

Effectiveness of Routine Physical Therapy With or Without Home Based Intensive Bimanual Training on Clinical Outcomes in Cerebral Palsy Children: A Randomized Controlled Trial

TypeinterventionalSponsorUniversity of LahoreRan2020 to 2020Enrolled30ConditionsCerebral PalsyArmshome based intensive bimanual training, Routine Physical Therapy
3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 7 syntheses or guidelines pooled it, 163 citations in OpenAlex.

  1. Pooled it
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  5. Exercise interventions for cerebral palsy.The Cochrane database of systematic reviews · 2017
    Pooled it
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  15. Lower Extremity Musculoskeletal Complications of Spastic Cerebral Palsy.Journal of orthopaedics and sports medicine · 2025
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 4 institutions in 2 countries.

Håvard TrønnesDepartment of Global Public Health and Primary Care, University of Bergen, Bergen, Norway; Department of Pediatrics, Haukeland University Hospital, Bergen, Norway.
Allen J Wilcox
Rolv T Lie
Trond Markestad
Dag Moster
Haukeland University Hospital · NONational Institute of Environmental Health Sciences · USNorwegian Institute of Public Health · NOUniversity of Bergen · NO

Funding

Epidemiologic Study Of Reproductive Outcomes And Environmental ExposuresZIAES044003 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI WILCOX, ALLEN J · 2009 to 2020
$4.7M
Environmental And Genetic Causes Of Birth DefectsZIAES049027 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI WILCOX, ALLEN J · 2009 to 2020
$2.6M
Intramural NIH HHS ZIA ES044003
6 · The paper itself

Abstract

aimTo assess the risk of developing cerebral palsy in relation to pregnancy disorders and preterm birth.

methodBy linking the Medical Birth Registry of Norway to other national registries, we identified all live births in Norway from 1967 through to 2001. Risks of cerebral palsy (CP) after preterm delivery and pregnancy disorders were estimated in different gestational age groups.

resultIn total, 1 764 509 children delivered at 23 to 43 weeks' gestation were included. The prevalence of CP was 1.8 per 1000 births. Absolute risk of CP was 8.5% among children born at 23 to 27 weeks' gestation, 5.6% at 28 to 30 weeks, 2.0% at 31 to 33 weeks, 0.4% at 34 to 36 weeks, and 0.1% thereafter. Placental abruption, chorioamnionitis, prolonged rupture of membranes, intrauterine growth restriction, pre-eclampsia, multiple births, placenta previa, bleeding, cervical conization, and congenital malformation were all associated with CP. Before 32 weeks' gestation, absolute risk of CP was highest with chorioamnionitis (9.1%) and lowest with pre-eclampsia (3.1%). Among those born after 31 weeks, the absolute risk of CP was more consistently (but also more slightly) increased with a recorded pregnancy disorder.

interpretationEarly delivery and pregnancy disorders were both strong risk factors for CP. The added risks with recorded pregnancy disorders varied within categories of gestational age.

Indexed as

RegistriesAge FactorsCerebral PalsyCohort StudiesFemaleGestational AgeHumansInfant, NewbornNorwayObstetric Labor ComplicationsPregnancyPregnancy ComplicationsPremature BirthPrevalenceRisk Factors

Identifiers

PMID24621110
PMCPMC4107088
OpenAlexW2088549789

What OpenQuestion holds

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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.