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Table 2 Correlation between the numbers of patients with different disease severities according to the JRS severity system and GAP staging model

From: Efficacy of early antifibrotic treatment for idiopathic pulmonary fibrosis

 

JRS severity system

Stage I

Stage II

Stage III

Stage IV

GAP staging model

Stage I

111

14

34

7

Stage II

58

4

24

22

Stage III

10

0

13

18

  1. JRS, Japanese Respiratory Society; GAP, gender–age–physiology