Fig. 5From: Hydrogen/oxygen therapy for the treatment of an acute exacerbation of chronic obstructive pulmonary disease: results of a multicenter, randomized, double-blind, parallel-group controlled trialSeven-days changes from baseline in SpO2 in FAS (a) and PPS (b) population. SpO2, noninvasive oxygen saturation; FAS full analysis set, PPS per-protocol set. *p < 0.05Back to article page