TABLE 3.

Selected Pearson correlation coefficients between prepregnancy BMI and third-trimester iron and inflammatory indicators by prepregnancy BMI category¹

	Prepregnancy nonobese (n = 29)							Prepregnancy obese (n = 21)
	BMI	Log 57Fe utilization, %	Adjusted log ferritin,2 μg/L	Adjusted log sTFR,2 nmol/L	Hepcidin, ng/mL	Log IL-6, pg/mL	EPO, mIU/mL	BMI	Log 57Fe Utilization, %	Adjusted log ferritin,2μg/L	Adjusted log sTFR,2, nmol/L	Hepcidin, ng/mL	Log IL-6, pg/mL	EPO, mIU/mL
BMI		0.18	−0.06	−0.26	0.24	0.09	−0.003		−0.23	0.25	−0.31	−0.26	0.48*	−0.09
Log 57Fe utilization, %	0.18		−0.01	0.10	−0.11	0.02	0.13	−0.23		−0.44*	0.08	−0.48*	−0.29	0.17
Adjusted log ferritin,2 μg/L	−0.06	−0.01		−0.30	0.34	−0.19	−0.34	0.25	−0.44*		−0.20	0.35	0.13	−0.31
Adjusted log sTFR,2 nmol/L	−0.26	0.10	−0.30		−0.01	0.15	0.68*	−0.31	0.08	−0.20		0.08	−0.19	0.45*
Hepcidin, ng/mL	0.24	−0.11	0.34	−0.01		0.02	−0.02	−0.26	−0.48*	0.35	0.08		0.03	−0.23
Log IL-6, pg/mL	0.09	0.02	−0.19	0.15	0.02		0.06	0.48*	−0.29	0.13	−0.19	0.03		0.05
EPO, mIU/mL	−0.003	0.13	−0.34	0.68*	−0.02	0.06		−0.09	0.17	−0.31	0.45*	−0.23	0.05

¹Values presented are r, coefficients of correlation, *P < 0.05. BMI, prepregnancy body mass index; EPO, serum erythropoietin; hs-CRP, serum high-sensitivity C-reactive protein; sTFR, log-transformed serum soluble transferrin receptor.

²Adjusted using the BRINDA (Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia) correction factor methods (33–35).