Fig. 1From: Cost-effectiveness of tiotropium versus usual care and glycopyrronium in the treatment of chronic obstructive pulmonary disease in SwedenMarkov model state transition diagram. Within each state a patient can experience any one of the following events: (1) no exacerbation (NoEx), (2) non-severe exacerbation (Ex), (3) severe exacerbation (SevEx)Back to article page