Evidence map›Paper›PMID 25019202›Full record

ArticlePloS one2014

Risk of cerebral palsy among the offspring of immigrants.

Joel G Ray, Donald A Redelmeier, Marcelo L Urquia, Astrid Guttmann, Sarah D McDonald, Marian J Vermeulen

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
1.5field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 27 citations in OpenAlex.

  1. Global prevalence of cerebral palsy: A systematic analysis.Developmental medicine and child neurology · 2022
    Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Cerebral palsy in Canada, 2011-2031: results of a microsimulation modelling study of epidemiological and cost impacts.Health promotion and chronic disease prevention in Canada : research, policy and practice · 2020
    Article
  8. Article
  9. Intergenerational abortion tendency between mothers and teenage daughters: a population-based cohort study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2018
    Article
  10. Article
  11. 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

6 authors at 5 institutions in 1 country.

Joel G RayDepartments of Medicine and Obstetrics and Gynecology, St. Michael's Hospital and the Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada.
Donald A RedelmeierDepartment of Medicine and Health Policy Management and Evaluation, Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada.
Marcelo L UrquiaCentre for Research on Inner City Health, St. Michael's Hospital, Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.
Astrid GuttmannDepartments of Paediatrics and Health Policy, Management and Evaluation, The Hospital for Sick Children, Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada.
Sarah D McDonaldDepartments of Obstetrics & Gynecology, Diagnostic Imaging and Clinical Epidemiology and Biostatistics Division of Maternal-Fetal Medicine, McMaster University, Hamilton, Ontario, Canada.
Marian J VermeulenInstitute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada.
Institute for Clinical Evaluative Sciences · CAMcMaster University · CASickKids Foundation · CASt. Michael's Hospital · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCerebral palsy (CP) has a multifactorial etiology, and placental vascular disease may be one major risk factor. The risk of placental vascular disease may be lower among some immigrant groups. We studied the association between immigrant status and the risk of CP.

methodsWe conducted a population-based retrospective cohort study of all singleton and twin livebirths in Ontario between 2002-2008, and who survived ≥28 days after birth. Each child was assessed for CP up to age 4 years, based on either a single inpatient or ≥2 outpatient pediatric diagnoses of CP. Relative to non-immigrants (n = 566,668), the risk of CP was assessed for all immigrants (n = 177,390), and further evaluated by World region of origin. Cox proportional hazard ratios (aHR) were adjusted for maternal age, income, diabetes mellitus, obesity, tobacco use, Caesarean delivery, year of delivery, physician visits, twin pregnancy, preterm delivery, as well as small- and large-for-gestational age birthweight.

resultsThere were 1346 cases of CP, with a lower rate among immigrants (1.45 per 1000) than non-immigrants (1.92 per 1000) (aHR 0.77, 95% confidence interval [CI] 0.67 to 0.88). Mothers from East Asia and the Pacific (aHR 0.54, 95% CI 0.39 to 0.77) and the Caribbean (aHR 0.58, 95% CI 0.37 to 0.93) were at a significantly lower risk of having a child with CP. Whether further adjusting for preeclampsia, gestational hypertension, placental abruption or placental infraction, or upon using a competing risk analysis that further accounted for stillbirth and neonatal death, these results did not change.

conclusionsImmigration and ethnicity appear to attenuate the risk of CP, and this effect is not fully explained by known risk factors.

Indexed as

Risk AssessmentCerebral PalsyCohort StudiesEmigrants and ImmigrantsFemaleHumansMaleOntarioProportional Hazards ModelsRetrospective Studies

Identifiers

PMID25019202
PMCPMC4096602
OpenAlexW2032130177

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.