Figure 2

Scatter plot and linear regression of haemoglobin level at week 12 versus log hepcidin. Change from baseline in haemoglobin level (g/dl) at week 12 versus mean of change from baseline at weeks 1 and 2 in log hepcidin (fmol/μL). (A) Placebo: r² = 0.002; P = 0.76; Spearman rank correlation: ρ = 0.04, P = 0.79. (B) Tocilizumab: r² = 0.09; P = 0.012; Spearman rank correlation: ρ = -0.35, P = 0.005. ^aMean of weeks 1 and 2 assessments.