Table 2

Associations between low iron test results and iron-deficiency diagnosis for the iron-replete population

OR (95% CI ; p value)
Low serum iron result4.57 (3.94 to 5.30; <0.001)
Adjusted OR (95% CI ; p value)
Low serum iron result2.59 (1.72 to 3.89; <0.001)
Female sex1.62 (1.34 to 1.96; <0.001)
Increasing age1.04 (1.01 to 1.06; 0.001)
Anaemia1.81 (1.40 to 2.35; <0.001)
Low MCV0.76 (0.36 to 1.63; 0.486)
Low MCH0.94 (0.58 to 1.51; 0.792)
Low MCHC0.94 (0.64 to 1.39; 0.757)
High RDW1.79 (0.92 to 3.49; 0.087)
Low TSAT1.84 (1.23 to 2.75; 0.003)
Increasing serum ferritin value1.004 (1.002 to 1.01; <0.001)
  • ORs present the binary association between the indicated variable and iron-deficiency diagnosis. Adjusted ORs present the multivariate association between serum iron result and diagnosis, with all covariates included in the model.

  • MCH, mean corpuscular haemoglobin; MCHC, mean corpuscular haemoglobin concentration; MCV, mean corpuscular volume; RDW, red cell distribution width; TSAT, transferrin saturation.