Table 5

The estimated effect of associated factors on RET-He

Variables	Crude			Adjusted*
Variables	β (95% CI)	R²	P value	β (95% CI)	R²	P value
Sex
Male	−0.03 (−0.09 to 0.04)	0.001	0.486	−0.02 (−0.09 to 0.04)	0.010	0.492
Female	1.00		–	1.00		–
Overweight
Yes	−0.04 (−0.11 to 0.02)	0.002	0.186	−0.04 (−0.10 to 0.03)	0.012	0.270
No	1.00		–	1.00		–
Age	0.10 (0.03 to 0.16)	0.009	0.003	0.10 (0.03 to 0.16)	0.010	0.003
Haemoglobin (g/L)	0.20 (0.14 to 0.27)	0.042	<0.001	0.19 (0.13 to 0.26)	0.043	<0.001
MCV (fL)	0.53 (0.47 to 0.58)	0.280	<0.001	0.58 (0.52 to 0.63)	0.294	<0.001
MCH (pg)	0.63 (0.58 to 0.68)	0.400	<0.001	0.65 (0.60 to 0.70)	0.404	<0.001
MCHC (g/dL)	0.36 (0.30 to 0.42)	0.129	<0.001	0.38 (0.32 to 0.44)	0.152	<0.001
HCT (L/L)	0.00 (−0.06 to 0.06)	0.000	0.987	−0.03 (−0.10 to 0.04)	0.011	0.361
RDW (%)	−0.33 (−0.39 to to 0.27)	0.110	<0.001	−0.35 (−0.41 to to 0.29)	0.127	<0.001
Leukocytes (×10⁹/L)	−0.06 (−0.13 to 0.00)	0.004	0.050	−0.04 (−0.11 to 0.03)	0.011	0.255
Platelet (×10⁹/L)	−0.11 (−0.17 to to 0.05)	0.012	<0.001	−0.10 (−0.16 to to 0.03)	0.019	0.003
MPV (fL)	−0.07 (−0.13 to 0.00)	0.004	0.042	−0.06 (−0.12 to 0.01)	0.013	0.080
Mentzer Index	0.42 (0.36 to 0.47)	0.174	<0.001	0.42 (0.36 to 0.48)	0.182	<0.001
Reticulocytes (×10⁹/L)	0.18 (0.12 to 0.25)	0.033	<0.001	0.18 (0.11 to 0.24)	0.040	<0.001
Ferritin (pmol/L)	−0.01 (−0.07 to 0.05)	0.0001	0.751	−0.01 (−0.07 to 0.06)	0.009	0.873

*Adjusted for sex and age of the child.
HCT, haematocrit; MCH, mean corpuscular haemoglobin; MCHC, mean corpuscular haemoglobin concentration; MCV, mean corpuscular volume; MPV, mean platelet volume; RDW, red cell distribution width; RET-He, reticulocyte haemoglobin equivalent.