Fig. 4From: Progressive fibrosing interstitial lung disease: prevalence and clinical outcomeComparison of survival curves in patients with PF-ILD according to PF-ILD diagnostic criteria. a Comparison of survival curves in patients with PF-ILD according to the diagnostic criteria used in this study. Criterion (i) a relative decline in FVC ≥ 10%; Criterion (ii) a relative decline in FVC of 5%–10% and worsening of respiratory symptoms or increased extent of fibrosis on HRCT; Criterion (iii) worsening of respiratory symptoms and increased extent of fibrosis on HRCT. b Comparison of survival curves in patients with PF-ILD according to the diagnostic criteria (INBUILD, Cottin et al., Behr et al., and George et al.)Back to article page