Structural equations model for associations between Hps, iron status, 1-C metabolites and markers of antioxidant status (N = 3,057): NHANES 1999–00.

<p><i>Footnote</i>: solid lines (p<0.05), dashed lines (p>0.05), black line (+ association between biomarkers), gray line (- association between biomarkers). Exogenous variables in model with significant associations with each of the endogenous variables (p<0.05) are listed below: <u>Hps equation</u>: Age(+), Black vs. White (+), Mex Am vs. White (+), Other vs. White (+), education (-), poverty income ratio(-), smoking(+), supplement use (-); <u>Iron_st equation</u>: Age(+), Women vs. men (-),energy(-), alcohol(+),sodium(+), BMI(-);<u>OneCarbon equation</u>: Age(-), Women vs. men (+), Black vs. White (+), Mex Am vs. White (+),alcohol (-), fiber (+), supplement use <u>Antiox equation</u>: Age(+), Women vs. Men (-), Black vs. White (-), Mex Am vs. White (-), Other vs. White (-), alcohol (+), fiber (+), supplement use (+), cholesterol (+), SBP (+), medical conditions (+).</p>