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Demographic characteristics and respiratory pathogens of children in groups 1 and 2
SD = Standard deviation; (+) = positive; GINA = Global Initiative for Asthma; IgG = immunoglobulin G; Ab = antibody; RAST = radioallergosorbent test; ECP = eosinophil cation protein; AEC = absolute eosinophil count; FEV1 = forced expiratory volume in 1 second; FEF25–75 = forced expiratory flow at 25–75% of the pulmonary volume; FeNO = fractional exhaled nitric oxide; bid = twice a day.
