Assessment of asthma control
The GINA guidelines1 recommend to evaluate daytime symptoms, nocturnal symptoms, need for reliever therapy, limitation of physical activities, lung function and assessment of future risk in order to determine control status. Based on the parameters defined by the GINA guidelines, patients were grouped as having “well-controlled”, “partly controlled” and “uncontrolled” asthma for the previous 4 weeks. “Partly controlled” and “uncontrolled” group were collected as “not well-controlled”. So, the analyses were performed for these two groups of “well-controlled” and “not well-controlled” asthma.6