Table 2 Methodology utilized to define slowly vs. rapidly progressive IPF
From: Aberrant innate immune sensing leads to the rapid progression of idiopathic pulmonary fibrosis
| Physiological (over first year of follow-up) |
| Consistent FVC decrease > 10% |
| Consistent DLCO decrease > 15% |
| Event based (over first year of follow-up) |
| All cause mortality |
| Acute exacerbation |