This file contains 4 tables that present additional data obtained in the survey that we consider important to publish. Additional file 1: Table S1 provides data of the comparison of the social, demographic and clinical characteristics of participants with asthma and those without asthma in the survey, Additional file 1: Table S2A presents allergy characteristics of the participants by asthma status while Additional file 1: Table S2B presents the respiratory symptoms of the participants by asthma status. Additional file 1: Table S3 presents findings of a multivariate model of the factors associated with asthma considering only factors associated with asthma at the bivariate stage with p-value less than 0.05. (DOCX 38 kb)