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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