Document Detail

International study of wheezing in infants: risk factors in affluent and non-affluent countries during the first year of life.
MedLine Citation:
PMID:  20444158     Owner:  NLM     Status:  In-Process    
Risk factors for wheezing during the first year of life (a major cause of respiratory morbidity worldwide) are poorly known in non-affluent countries. We studied and compared risk factors in infants living in affluent and non-affluent areas of the world. A population-based study was carried out in random samples of infants from centres in Latin America (LA) and Europe (EU). Parents answered validated questionnaires referring to the first year of their infant's life during routine health visits. Wheezing was stratified into occasional (1-2 episodes, OW) and recurrent (3 + episodes, RW). Among the 28687 infants included, the most important independent risk factors for OW and RW (both in LA and in EU) were having a cold during the first 3 months of life [OR for RW 3.12 (2.60-3.78) and 3.15 (2.51-3.97); population attributable fraction (PAF) 25.0% and 23.7%]; and attending nursery school [OR for RW 2.50 (2.04-3.08) and 3.09 (2.04-4.67); PAF 7.4% and 20.3%]. Other risk factors were as follows: male gender, smoking during pregnancy, family history of asthma/rhinitis, and infant eczema. Breast feeding for >3 months protected from RW [OR 0.8 (0.71-0.89) in LA and 0.77 (0.63-0.93) in EU]. University studies of mother protected only in LA [OR for OW 0.85 (0.76-0.95) and for RW 0.80 (0.70-0.90)]. Although most risk factors for wheezing are common in LA and EU; their public health impact may be quite different. Avoiding nursery schools and smoking in pregnancy, breastfeeding babies >3 months, and improving mother's education would have a substantial impact in lowering its prevalence worldwide.
Luis Garcia-Marcos; Javier Mallol; Dirceu Solé; Paul L P Brand;
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-27
Journal Detail:
Title:  Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology     Volume:  21     ISSN:  1399-3038     ISO Abbreviation:  Pediatr Allergy Immunol     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9106718     Medline TA:  Pediatr Allergy Immunol     Country:  England    
Other Details:
Languages:  eng     Pagination:  878-88     Citation Subset:  IM    
Pediatric Respiratory and Allergy Units, Virgen de la Arrixaca University Children's Hospital, University of Murcia, Murcia, Spain.
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