Fig. 2From: Cost-effectiveness of lung volume reduction coil treatment in patients with severe emphysema: results from the 2-year follow-up crossover REVOLENS study (REVOLENS-2 study)Utilities during the 2-years follow-up period for both groups. The total QALYs in each group are represented by the area under the curves and the QALY difference between the 2 groups by the area between the curvesBack to article page