Fig. 6From: InforMing the PAthway of COPD Treatment (IMPACT) trial: fibrinogen levels predict risk of moderate or severe exacerbationsAll-cause mortality on and off-treatment by a fibrinogen quartile; b fibrinogen 3.5 g/L threshold. Quartile 1: < 2.780 g/L; Quartile 2: ≥ 2.780 g/L; Quartile 3: < 3.830 g/L; Quartile 4: ≥ 3.830 g/LBack to article page