Distributions of iron markers. Distributions of TSAT, ferritin, and
CRP (a–c), and stratified distributions of ferritin by
CRP levels (d).The distributions of TSAT, ferritin, and CRP were
right-skewed. In d, the subjects were stratified by CRP level at
10 mg/l, which denoted the 87th percentile of CRP. The median and
IQR of CRP were 62 (IQR: 29–149) and 102 (46–216) among the
patients with CRP <10 mg/l and CRP ⩾10 mg/l,
respectively. CRP, C-reactive protein; IQR, interquartile range; TSAT,
transferrin saturation.