Figure 2From: Effect of exacerbations on health status in subjects with chronic obstructive pulmonary disease Changes in the SGRQ scores over 6 months in subjects with (open bars) and without acute exacerbations (gray bars). Mean scores ± SE in comparison to the baseline are presented. The broken line indicates a clinically significant deterioration in health status. A higher score indicates a deterioration in health status.*: p < 0.05 versus baseline.Back to article page