Fig. 2From: Surfactant protein A as a biomarker of outcomes of anti-fibrotic drug therapy in patients with idiopathic pulmonary fibrosisRate of change in (a) FVC and (b) DLco in the initial 6 months. Changes in FVC and DLco in the stable group were significantly smaller than those in the progression group. Horizontal line indicates median concentration. The upper and lower limits of the line indicate the inter quartile range. Data were analyzed by Mann–Whitney U test. *p < 0.01 stable vs. progression group. FVC, forced vital capacity; DLco, diffusing capacity of the lung for carbon monoxideBack to article page