Evidence map›Paper›PMID 24105783›Full record

ArticleThorax2014

Hygiene, atopy and wheeze-eczema-rhinitis symptoms in schoolchildren from urban and rural Ecuador.

Philip J Cooper, Maritza Vaca, Alejandro Rodriguez, Martha E Chico, Darci N Santos, Laura C Rodrigues, Mauricio L Barreto

Abstract readComparative Study
In one paragraph

Article in Thorax, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Observational
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  14. Review
  15. Urban vs rural residency and allergy prevalence among adult women: Iowa Women's Health Study.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2018
    Article
  16. Article
  17. Effect of Early-Life Geohelminth Infections on the Development of Wheezing at 5 Years of Age.American journal of respiratory and critical care medicine · 2018
    Article
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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

7 authors.

Philip J CooperLaboratorio de Investigaciones FEPIS, Quinindé, Esmeraldas Province, Ecuador.
Maritza Vaca
Alejandro Rodriguez
Martha E Chico
Darci N Santos
Laura C Rodrigues
Mauricio L Barreto

Funding

Wellcome Trust 072405/Z/03/ZWellcome Trust 088862Wellcome Trust 088862/Z/09/ZWellcome Trust 100714
6 · The paper itself

Abstract

backgroundRural residence is protective against atopy and wheeze-rhinitis-eczema symptoms in developed countries, an effect attributed to farming and poor hygiene exposures. There are few data from developing countries addressing this question. We compared atopy and wheeze-rhinitis-eczema symptoms between urban and rural Ecuador, and explored the effects of farming and poor hygiene exposures.

methodsWe performed cross sectional studies of schoolchildren living in rural and urban Ecuador. Data on symptoms and farming/hygiene exposures were collected by parental questionnaire, atopy by allergen skin prick test reactivity and geohelminth infections by stool examinations.

resultsAmong 2526 urban and 4295 rural schoolchildren, prevalence was: atopy (10.0% vs 12.5%, p=0.06), wheeze (9.4% vs 10.1%, p=0.05), rhinitis (8.1% vs 6.4%, p=0.02) and eczema (5.9% vs 4.7%, p=0.06). A small proportion of symptoms were attributable to atopy (range 3.9-10.7%) with greater attributable fractions for respiratory symptoms observed in urban schoolchildren. Respiratory symptoms were associated with poor hygiene/farming exposures: wheeze with lack of access to potable water; and rhinitis with household pets, no bathroom facilities and contact with large farm animals. Birth order was inversely associated with respiratory symptoms. Area of residence and atopy had few effects on these associations.

conclusionsUrban schoolchildren living in Ecuador have a similar prevalence of atopy, eczema and wheeze but a higher prevalence of rhinitis compared with rural children. Some farming and poor hygiene exposures were associated with an increase in the prevalence of wheeze or rhinitis while birth order was inversely associated with these symptoms.

Indexed as

HygieneRespiratory SoundsAdolescentAllergensAnimalsChildChild, PreschoolCross-Sectional StudiesEcuadorEczemaFecesFemaleHousingHumansHypersensitivity, ImmediateMaleAllergensAtopyFarmingHygieneUrban-RuralWheeze-Rhinitis-Eczema

Identifiers

PMID24105783
PMCPMC3932750

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.