Cambios en la prevalencia de asma en escolares chilenos entre 1994 y 2002: International Study of Asthma and Allergies in Childhood (ISAAC) - Chile phases I and III
Background: In developed countries, the prevalence of asthma in children has significantly increased in the last decades. However, there is no information about the trends of asthma in Latin America. Aim: To determine changes in asthma prevalence between 1994 and 2002 in Chilean schoolchildren. Mate...
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| Autores principales: | , , , , , , |
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| Lenguaje: | Spanish / Castilian |
| Publicado: |
Sociedad Médica de Santiago
2007
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872007000500005 |
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| Sumario: | Background: In developed countries, the prevalence of asthma in children has significantly increased in the last decades. However, there is no information about the trends of asthma in Latin America. Aim: To determine changes in asthma prevalence between 1994 and 2002 in Chilean schoolchildren. Material and methods: The prevalence of asthma symptoms in schoolchildren aged 7 (n =18.697) and 13 years (n =18.939), from South Santiago, Valdivia and Punta Arenas, obtained during phases I and III of the ISAAC, carried out in 1994 and 2002, was compared. Results: From 1994 to 2002, the mean national prevalence of "wheezing in the last 12 months" in the group aged 6-7years, changed from 18.2% to 17.9% (p =NS); "asthma ever" from 12.5% to 10.7% (p =NS), and "severe episode" from 3.2% to 2.8% (p =NS). There was a significant increase of the prevalence of "wheezing in the last 12 months", in children aged 13-14years, from 9.8% to 15.5% (p =0.01); in "asthma ever" from 10.2% to 14.9% (p =0.01), and for "severe episode" from 2.8% to 3.8% (p =0.01). Conclusions: There was a significant increase in the prevalence of respiratory symptoms related to asthma in children aged 13-14 years that was consistent in all the 3 participating centres of the ISAAC. However, the prevalence of asthma symptoms in children aged 6-7 years remained without significant changes between 1994 and 2002 |
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