Figure 2From: Efficacy and safety of AZD3199 vs formoterol in COPD: a randomized, double-blind studyAdjusted mean changes in FEV 1 after 4 weeks of treatment. Values shown are FEV1 changes (from baseline [day 1] to end of week 4) at each post-dose time-point. od = once daily; bid = twice daily. The formoterol study group received additional study medication at 12 hours.Back to article page