Wheezing and risk factors in the first year of life in Cantabria, Spain. The EISL study.

Objectives: To determine the prevalence of wheezing during the first year of life in Cantabria, Spain and its associated risk factors.

Methodology: A cross-sectional, multicentre, descriptive epidemiological study was carried out in a representative sample of 958 infants in the first year of life, born in Cantabria. A previously validated and standardised written questionnaire was completed by the parents of infants seen between 12 and 15 months of age in the Primary Care Centres.

Study of wheezing and its risk factors in the first year of life in the Province of Salamanca, Spain. The EISL Study.

Objectives: To determine the prevalence of wheezing and its associated risk factors in infants in the first year of life in the province of Salamanca, Spain.

Methods: A multicentre, cross-sectional, descriptive epidemiological study was designed to evaluate a representative sample of 750 infants in the first year of life, born in the province of Salamanca between 1 June 2008 and 30 September 2009. The study was based on a previously validated and standardised written questionnaire administered among the parents of those children seen for control at 12 months of age in any of the Primary Care centres in the province of Salamanca.