Fig. 3a
From: Idiopathic pulmonary fibrosis in the United States: time to diagnosis and treatment
Survival Post-Initial Oxygen Use, N = 25,172. (Relative survival of patients with IPF in the cohort after initiation of oxygen or after the initial respiratory hospitalization. A. Shown is the Kaplan-Meier survival estimate of patients (N = 25,172) following initiation of oxygen therapy. The surviving fraction is expressed between 0 and 1.0, the time following initiation of oxygen therapy is expressed in years)