Evidence map›Paper›PMID 24528371›Full record

ArticleClinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology2014

Exposure to Helicobacter pylori infection in early childhood and the risk of allergic disease and atopic sensitization: a longitudinal birth cohort study.

A Amberbir, G Medhin, W E Abegaz, C Hanlon, K Robinson, A Fogarty, J Britton, A Venn, G Davey

Open access · hybridAbstract read
In one paragraph

Article in Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 6% 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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 48 citations in OpenAlex.

  1. Prevalence and associated risk factors of Helicobacter pylori infection in East Africa: a systematic review and meta-analysis.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024
    Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Update on the association between Helicobacter pylori infection and asthma in terms of microbiota and immunity.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2024
    Review
  6. Article
  7. Treatment withFrontiers in immunology · 2023
    Article
  8. Therapeutic advances in gastroenterology · 2023
    Review
  9. Observational
  10. Experimental and therapeutic medicine · 2020
    Article
  11. Article
  12. Article
  13. Current genomics · 2019
    Article
  14. Seroprevalence and determinants ofAfrican health sciences · 2019
    Article
  15. Article
  16. Environmental factors and eosinophilic esophagitis.The Journal of allergy and clinical immunology · 2018
    Review
  17. Article
  18. Inflammatory intestinal diseases · 2016
    Review
  19. Article
  20. 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

9 authors at 4 institutions in 2 countries.

A AmberbirDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK; Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK.
G Medhin
W E Abegaz
C Hanlon
K Robinson
A Fogarty
J Britton
A Venn
G Davey
University of Nottingham · GBAddis Ababa University · ETBrighton and Sussex Medical School · GBLondon School of Hygiene & Tropical Medicine · GB

Funding

Medical Research Council G0601170Medical Research Council MR/K023195/1Wellcome Trust 100715
6 · The paper itself

Abstract

backgroundAn inverse relation between Helicobacter pylori infection and allergic disease has been reported by a range of independent epidemiological studies, but evidence from longitudinal studies is scarce.

objectiveWe have investigated the effects of H. pylori infection on the incidence and prevalence of allergic diseases and sensitization in a low-income birth cohort.

methodsIn 2005/2006, a population-based birth cohort was established in Butajira, Ethiopia, and the 1006 singleton babies born were followed up at ages 1, 3, and 5. Symptoms of allergic disease were collected using the ISAAC questionnaire, allergen skin tests performed, and stool samples analysed for H. pylori antigen and geohelminths. Multiple logistic regression was used to determine the independent effects of H. pylori measured at age 3 on the incidence of each outcome between ages 3 and 5 years (in those without the outcome at age 3), controlling for potential confounders, and to additionally assess cross-sectional associations.

resultsA total of 863 children were followed up to age 5. H. pylori infection was found in 25% of the children at both ages 3 and 5, in 21% at age 5 but not 3, and in 17% at age 3 but not at age 5. H. pylori infection at age 3 was significantly associated with a decreased risk of incident eczema between ages 3 and 5 (adjusted OR, 95% CI, 0.31; 0.10-0.94, P = 0.02). Cross-sectionally at age 5, H. pylori infection was inversely associated with skin sensitization (adjusted OR, 95% CI, 0.26; 0.07-0.92, P = 0.02). CONCLUSION AND CLINICAL RELEVANCE: These findings provide further evidence to suggest that early-life exposure to H. pylori may play a protective role in the development of allergy.

Indexed as

Age FactorsChild, PreschoolCross-Sectional StudiesFemaleHelicobacter InfectionsHelicobacter pyloriHost-Pathogen InteractionsHumansHypersensitivityHypersensitivity, ImmediateIncidenceInfantLongitudinal StudiesMaleOdds RatioPrevalencebirth cohorteczemaEthiopiaHelicobacter pylorisensitization

Identifiers

PMID24528371
PMCPMC4164268
OpenAlexW2020848373

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.