Asthma similarities across ProAR (Brazil) and U-BIOPRED (Europe) adult cohorts of contrasting locations, ethnicity and socioeconomic status.

•The populations compared are of diverse ethnicity and socioeconomic status.•Europeans and Brazilians share multiple similarities, in spite of the differences.•In severe asthma (SA), age, weight and proportion of former smokers are similar.•FEV1% pre-BD and % of atopics are similar in those with SA across both continents.•The proportion of those with blood eosinophil counts > 300/μl is comparable in SA.