Fig. 1From: Demographic and clinical profile of idiopathic pulmonary fibrosis patients in Spain: the SEPAR National RegistryFlowchart of patients. 608 patients were evaluable for the main objective of the study (IPF Spanish patient characterization). 231 patients that received pirfenidone for at least 12 months were analysed to evaluate safety of treatment and clinical features of this subgroup of casesBack to article page