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Fractional polynomial logistic regression lines with 95% CIs (gray areas) for associations of ferritin (µg/L) (A) and IL-12 (pg/mL) (B) with SFH 3–10 compared with SFH 10–90 using INTERGROWTH-21 standards, adjusted for all covariates in the model. SFH 3–10, symphysis–fundal height ≥3rd to <10th centiles; SFH, 10–90, symphysis–fundal height ≥10th to ≤90th centiles.
