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A Systematic Review on the Development of Asthma and Allergic Diseases in Relation to International Immigration: The Leading Role of the Environment Confirmed

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dc.contributor.author Cabieses, Báltica
dc.contributor.author Uphoff, Eleonora
dc.contributor.author Pinart, Mariona
dc.contributor.author Maria Antó, Josep
dc.contributor.author Wright, John
dc.date.accessioned 2017-04-04T15:00:57Z
dc.date.available 2017-04-04T15:00:57Z
dc.date.issued 2014
dc.identifier.citation PLoS One. 2014 Aug 20;9(8):e105347 es_CL
dc.identifier.uri http://dx.doi.org/10.1371/journal.pone.0105347 es_CL
dc.identifier.uri http://hdl.handle.net/11447/1084
dc.description.abstract BACKGROUND: The prevalence of asthma and allergic diseases is rising worldwide. Evidence on potential causal pathways of asthma and allergies is growing, but findings have been contradictory, particularly on the interplay between allergic diseases and understudied social determinants of health like migration status. This review aimed at providing evidence for the association between migration status and asthma and allergies, and to explore the mechanisms between migration status and the development of asthma and allergies. METHODS AND FINDINGS: Systematic review on asthma and allergies and immigration status in accordance with the guidelines set by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. The pooled odds ratio (OR) of the prevalence of asthma in immigrants compared to the host population was 0.60 (95% CI 0.45-0.84), and the pooled OR for allergies was 1.01 (95% CI 0.62-1.69). The pooled OR for the prevalence of asthma in first generation versus second generation immigrants was 0.37 (95% CI 0.25-0.58). Comparisons between populations in their countries of origin and those that emigrated vary depending on their level of development; more developed countries show higher rates of asthma and allergies. CONCLUSIONS: Our findings suggest a strong influence of the environment on the development of asthma and allergic diseases throughout the life course. The prevalence of asthma is generally higher in second generation than first generation immigrants. With length of residence in the host country the prevalence of asthma and allergic diseases increases steadily. These findings are consistent across study populations, host countries, and children as well as adults. Differences have been found to be significant when tested in a linear model, as well as when comparing between early and later age of migration, and between shorter and longer time of residence. es_CL
dc.format.extent 16 es_CL
dc.language.iso en_US es_CL
dc.publisher PLoS es_CL
dc.subject Asthma/epidemiology es_CL
dc.subject Emigration and Immigration/statistics & numerical data es_CL
dc.subject Environment es_CL
dc.title A Systematic Review on the Development of Asthma and Allergic Diseases in Relation to International Immigration: The Leading Role of the Environment Confirmed es_CL
dc.type Artículo es_CL


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