Figure 3From: The clinical significance of 5% change in vital capacity in patients with idiopathic pulmonary fibrosis: extended analysis of the pirfenidone trialK-M plot of PFS times with origin at month 3 in groups of patients with and without 5% decline in VC at month 3. Solid line with closed circle: No decline in VC at month 3; broken line with plus: a ≥ decline in VC at month 3. P-value was 0.8835 with log-rank test.Back to article page