Table 3: Prevalence of abnormal values for iron status indicators regardless of inflammation and C-reactive protein (CRP) in preschool Inuit children.

Mean (SD)Median (IQR)Cutoff pointPrevalence of abnormal values
% ()

Hb (g/L)120.2 (11.0)120 (114–128)<11015.0 (27/180)
MCV (fL)74.5 (5.7)75.4 (72.3–77.9)<7222.8 (41/180)
MCHC (g/L)330.0 (17.0)329 (319–344)<32027.7 (49/177)
SI (µmol/L)8.7 (4.7)8.0 (5.0–11.0)<9 54.7 (93/170)
TIBC (µmol/L)81.3 (13.8)80.6 (71.3–89.4)>7274.1 (126/170)
TS (%)11.1 (6.5)10.0 (6.3–14.0)<1681.8 (139/170)
SF (µg/L)24.5 (18.6)21.0 (11.8–30.0)<1532.9 (56/170)
sTfR (mg/L)2.1 (0.7)1.9 (1.7–2.3)>1.9547.4 (73/154)
sTfR-FI1.9 (1.8)1.5 (1.2–1.9)>1.549.7 (74/149)
CRP (mg/L)5.9 (12.6)0.9 (0.5–4.8)>524.7 (42/170)

SD: standard deviation; IQR: interquartile range.
Hb: hemoglobin; MCV: mean corpuscular volume; MCHC: mean corpuscular hemoglobin concentration; SI: serum iron; TIBC: total iron binding capacity; TS: transferrin saturation; SF: serum ferritin; sTfR: soluble transferrin receptor; sTfR-FI: soluble transferrin receptor-ferritin index.
Reference sources for the cutoffs were as follows: Hb [19]; MCV [20]; MCHC [21]; SI and TIBC [22, 23]; TS [14, 19, 23]; SF [6, 30]; sTfR [26]; sTfR-FI [18, 2729]; CRP [7, 3133].