ACT: asthma control test, BD: bronchodilator, BMI: body mass index, FEV1: forced expiratory volume in one second, FVC: forced vital capacity, ICS: inhaled corticosteroids, IgE: type E immunoglobulin, LABA: long-acting beta-agonists, n’: number of patients with data available (indicated in case of missing data), NSA: non-severe school-age asthmatic children, NSRW: non-severe preschool recurrent wheezers, PAQLQ: Pediatric Asthma Quality of Life Score, SA: severe school-age asthmatic children, SRW: severe preschool recurrent wheezers