Distribution of patients according to the TSAT-ferritin index [10] (rows), the TSAT-TIBC index (columns) and the combined TSAT-TIBC-ferritin index (cells).

Data are expressed as n (%).Cells include numbers (%) for the five iron profiles defined by the combined ferritin-TSAT-TIBC index : normal, absolute ID, noninflammatory functional ID, inflammatory functional ID, and hypotransferrinaemia.Abbreviations: ID, iron deficiency; TSAT, transferrin saturation; TIBC, transferrin iron-binding capacity.TSAT-Ferritin index: normal iron status defined as TSAT≥20%, absolute ID as TSATTSAT-TIBC index: normal iron status defined as TIBC≥50 µmol/L and TSAT≥20%, ID as TIBC≥50 µmol/L and TSAT