Fig. 3From: 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 OSA severity 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 capacityBack to article page