Fig. 1From: Effect of beta-blockers on exacerbation rate and lung function in chronic obstructive pulmonary disease (COPD)Panel (a) - Percent free of exacerbation by beta-blocker use in the Macro placebo arm at 0, 30, 60, 90 and 180 days. Panel (b) – Percent free of exacerbation by beta-blocker use in the STATCOPE trialBack to article page