Aged 1 Aged, 80 and over 1 Antifibrotic Agents 1 Article 1 Female 1 Hospitalization 1 Humans 1 Idiopathic Pulmonary Fibrosis 1 Male 1 Medicare 1 Mortality 1 Protein Kinase Inhibitors 1 Retrospective Studies 1 United States 1 aged 1 ambulatory care 1 antifibrotic agent 1 antifibrotic therapy atrial fibrillation 1 congestive heart failure 1 controlled study 1 corticosteroid 1 corticosteroid therapy 1 economics 1 female 1 fibrosing alveolitis 1 follow up 1 gastroesophageal reflux 1 hospitalization 1 human 1