Fig. 2From: The relationship between obstructive sleep apnea and asthma severity and vice versa: a systematic review and meta-analysisA %FEV1 B: FEV1/FVC; Forest plot for subgroup analyses by age on the effect of OSA on lung function. %FEV1: forced expiratory volume in one second %predicted; FEV1/FVC: forced expiratory volume in one second/forced vital capacity; WMD: weighted mean difference; CI: confidence intervalBack to article page