Evidence map›Paper›PMID 21825085›Full record

ArticleThorax2011

Urbanisation is associated with prevalence of childhood asthma in diverse, small rural communities in Ecuador.

Alejandro Rodriguez, Maritza Vaca, Gisela Oviedo, Silvia Erazo, Martha E Chico, Carlos Teles, Mauricio L Barreto, Laura C Rodrigues, Philip J Cooper

Open access · hybridAbstract read
In one paragraph

Article in Thorax, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
4.0field-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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 80 citations in OpenAlex.

  1. Pooled it
  2. Features of asthma which provide meaningful insights for understanding the disease heterogeneity.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2018
    Trial
  3. Trial
  4. Review
  5. Article
  6. Article
  7. Social inequalities in childhood asthma.The World Allergy Organization journal · 2024
    Review
  8. Article
  9. Article
  10. Article
  11. Global Considerations in Asthma Treatment: Management in Low Resource Settings.Advances in experimental medicine and biology · 2023
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. A hybrid of two major Blomia tropicalis allergens as an allergy vaccine candidate.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2020
    Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 3 countries.

Alejandro RodriguezCentro de Investigaciones FEPIS, Fundación Ecuatoriana para la Investigación en Salud, Quinindé, Esmeraldas, Ecuador. rodriguez_alejo1@hotmail.com
Maritza Vaca
Gisela Oviedo
Silvia Erazo
Martha E Chico
Carlos Teles
Mauricio L Barreto
Laura C Rodrigues
Philip J Cooper
Instituto de Saúde · BRUniversidade Federal da Bahia · BRLiverpool School of Tropical Medicine · GBLondon School of Hygiene & Tropical Medicine · GB

Funding

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

Abstract

backgroundStudies conducted in transitional communities from Africa and Asia have pointed to the process of urbanisation as being responsible for the increase in asthma prevalence in developing regions. In Latin America, there are few published data available on the potential impact of urbanisation on asthma prevalence. The aim of the present study was to explore how the process of urbanisation may explain differences in asthma prevalence in transitional communities in north-eastern Ecuador. METHODOLOGY/PRINCIPAL

findingsAn ecological study was conducted in 59 communities in Esmeraldas Province, Ecuador. Indicators of urbanisation were grouped into three indices representing the processes associated with urbanisation: socioeconomic, lifestyle and urban infrastructure. Categorical principal components analysis was used to generate scores for each index and a fourth index--a summary urbanisation index--was derived from the most representative variables in each of the three indices. The authors analysed the associations between community asthma prevalence and the indices, as well as with each indicator variable of every group. The overall prevalence of asthma was 10.1% (range 0-31.4% between communities). Three of the four indices presented significant associations with community asthma prevalence: socioeconomic (r = 0.295, p = 0.023), lifestyle (r = 0.342, p = 0.008) and summary urbanisation index (r = 0.355, p = 0.006). Variables reflecting better socioeconomic status and a more urban lifestyle were associated with greater asthma prevalence.

conclusionsThese data provide evidence that the prevalence of asthma increases with increasing levels of urbanisation in transitional communities, and factors associated with greater socioeconomic level and changes towards a more urban lifestyle may be particularly important.

Indexed as

UrbanizationAdolescentAsthmaChildDeveloping CountriesEcuadorFemaleHumansLife StyleMalePrevalencePrincipal Component AnalysisRural PopulationSocioeconomic FactorsSurveys and Questionnaires

Identifiers

PMID21825085
PMCPMC3221322
OpenAlexW2101239522

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.