Evidence map›Paper›PMID 7597666›Full record

ArticleThorax1995

Maternal asthma, premature birth, and the risk of respiratory morbidity in schoolchildren in Merseyside.

Y J Kelly, B J Brabin, P Milligan, D P Heaf, J Reid, M G Pearson

Open access · bronzeAbstract read
In one paragraph

Article in Thorax, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 2 pooled it
5.9field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 2 syntheses or guidelines pooled it, 108 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Unique Allergic Asthma Phenotypes in Offspring of House Dust Mite-exposed Mice.American journal of respiratory cell and molecular biology · 2022
    Article
  6. Review
  7. Review
  8. Article
  9. IL-5 ExposureAmerican journal of respiratory cell and molecular biology · 2020
    Article
  10. Article
  11. Maternal depressive symptoms, maternal asthma, and asthma in school-aged children.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2017
    Article
  12. Article
  13. Birth weight, gestational age, fetal growth and childhood asthma hospitalization.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2014
    Article
  14. Prematurity, atopy, and childhood asthma in Puerto Ricans.The Journal of allergy and clinical immunology · 2014
    Article
  15. Article
  16. Article
  17. Article
  18. Population-based study on association between birth weight and risk of asthma: a propensity score approach.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2013
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Y J KellyLiverpool School of Tropical Medicine, University of Liverpool, UK.
B J Brabin
P Milligan
D P Heaf
J Reid
M G Pearson
University of Liverpool · GBLiverpool School of Tropical Medicine · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA study was carried out to analyse the impact of maternal asthma on the risk of preterm delivery and the contribution of preterm delivery to the development of childhood asthma.

methodsTwo cross sectional community studies of 1872 children (5-11 years) in 1991 and 3746 children in 1993 were performed. A respiratory health questionnaire was distributed throughout 15 schools in Merseyside and completed by the parents of the children.

resultsAsthmatic mothers were more likely to have a preterm delivery than non-asthmatic mothers (odds ratio (OR) 1.49; 95% CI 1.10 to 2.02). Smoking was a separate risk factor for preterm delivery (OR 1.35; 95% CI 1.10 to 1.65). Asthmatic mothers did not have an increased risk of delivering small, growth retarded babies. Maternal asthma, paternal asthma, and premature birth, in that order, increased the risk of later childhood respiratory morbidity (OR 3.13, 95% CI 2.36 to 4.16; 2.23, 95% CI 1.62 to 3.05; 1.40, 95% CI 1.10 to 1.79). Conversely, babies who were small for gestational age appeared less likely to develop doctor diagnosed asthma or the symptom triad of cough, wheeze, and breathlessness in childhood, although this was not statistically significant (OR 0.63, 95% CI 0.28 to 1.41).

conclusionsMaternal smoking during pregnancy and maternal asthma are independent risk factors associated with preterm delivery. Asthma in mothers predisposes to preterm delivery but not fetal growth retardation. Preterm birth, but not growth retardation, predisposes the child to the development of subsequent asthma.

Indexed as

Pregnancy ComplicationsAsthmaCausalityChildChild, PreschoolCross-Sectional StudiesEnglandFemaleHumansInfant, NewbornInfant, Small for Gestational AgeMorbidityObstetric Labor, PrematurePregnancyPrevalenceRisk Factors

Identifiers

PMID7597666
PMCPMC1021223
OpenAlexW2040363672

What OpenQuestion holds

Textmetadata
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.