Multivariate-adjusted ORs (95%(CIs)) of SGA or LGA infant for neonatal anthropometric measurements at birth associated with maternal iron supplementation throughout pregnancy on stratum 1 (40 or 80 mg/d) and stratum 2 (40 or 20 mg/d). The reference group was 40 mg/d dose group for stratum 1 and 20 mg/d dose group for stratum 2. Abbreviations: SGA—small for gestational age; LGA—large for gestational age. * Models were adjusted for sex of baby, maternal age (years), maternal early-pregnancy BMI categories (normal weight (ref.), overweight, obese), family SES (low (ref.), medium, high), smoking during pregnancy (no (ref.), yes), fiber intake at the first trimester, log-serum ferritin (µg/L) at the first trimester, cortisol (µg/dl) at the first trimester, carrier of HFE gene mutation (no (ref.), yes for stratum 2), and gestational weight gain (kg). The significance of numbers in bold is p-value < 0.05. SGA (<10th percentile) or LGA (>90th percentile) versus appropriate-for-gestational-age (10 to 90th percentile) for gestational age- and sex-specified birthweight, length, or head circumference based on the INTERGROWTH-21st standards as reference. The diamonds represent OR and the whisker plots represent 95% CIs. n—number of cases infants (%); N—number of total infants.