TABLE 3.

Association of sex with iron biomarkers.

	Model 1*	Model 2†
	Beta (95% CI)‡	Beta (95% CI)
Ferritin, μg/L	–0.40 (–0.42, –0.38)	–0.37 (–0.39, –0.35)
Hepcidin, nmol/l	–0.23 (–0.25, –0.21)	–0.22 (–0.24, –0.20)
sTfR, mg/l	0.00 (–0.01, 0.01)	–0.01 (–0.01, 0.003)
TSAT, %	–0.07 (–0.08, –0.06)	–0.07 (–0.08, –0.06)

CI, indicates confidence interval; sTfR, soluble transferrin receptor; TSAT, transferrin saturation; and BMI, body mass index.

*Model 1 was adjusted for age.

^†Model 2 was adjusted for age, BMI, smoking, and alcohol use.

^‡Statistical test: multiple linear regression. All iron biomarkers were log transformed. Reference category for sex is men.