TY - JOUR T1 - Asthma and body mass definitions affect estimates of association: evidence from a community-based cross-sectional survey JF - ERJ Open Research JO - erjor DO - 10.1183/23120541.00076-2019 VL - 5 IS - 4 SP - 00076-2019 AU - Francisca de Castro Mendes AU - Inês Paciência AU - João Cavaleiro Rufo AU - Diana Silva AU - Pedro Cunha AU - Mariana Farraia AU - Luís Delgado AU - Pedro Moreira AU - André Moreira Y1 - 2019/10/01 UR - http://openres.ersjournals.com/content/5/4/00076-2019.abstract N2 - Asthma and obesity have been on the rise for the past few decades, becoming the most prevalent chronic conditions in children [1, 2]. Obesity has been suggested to increase asthma incidence and prevalence, and change asthma towards a more difficult-to-control phenotype [3]. Yet, the impact of heterogeneous asthma and obesity definitions on the suggested association has been poorly explored. As such, we aimed to evaluate the influence of different asthma and obesity definitions on the obesity–asthma relationship.Differing body mass classifications challenge the strength of the epidemiological evidence suggesting asthma and obesity are linked. The relationship between asthma and overweight in children depends on the body mass definitions adopted. http://bit.ly/2lSxhC5 ER -