Figure 1

P. Jirovecii colonization rate in the including idiopathic pulmonary fibrosis (IPF), collagen vascular-related IP (CVD), and chronic bronchitis (CB)/pneumonia (pneumo) groups. Patients with IP (IPF and CVD) were divided into groups receiving oral corticosteroid therapy and without corticosteroid therapy (a). The rates of oral corticosteroids use in IPF, CVD, CB/pneumonia and Pneumocystis pneumonia (PCP) group (b).