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Table 1 Baseline characteristics of the mothers and infants

From: Does the fortified milk with high iron dose improve the neurodevelopment of healthy infants? Randomized controlled trial

  INTERVENTION
Formula milk (high dose of Fe) n = 105 Formula milk (low dose of Fe) n = 28 p
Mother
 Mother age, years 31.5 (4.5) 32.9 (3.9) 0.1334
Socioeconomic level, %
 Low 10.5 3.6 0.403
 Medium 53.3 50
 High 36.2 46.4
Smokers, % 21 10.7 0.179
Mode of delivery, %
 Eutocic 65.1 54.5 0.222
 Forceps 16.3 9
 Caesarean 18.6 36.4
Primiparous, % 52.1 64.3 0.268
Gestational age, weeks 39.6 (1.1) 39.4 (1.3) 0.538
STAI_State 14.4 (8.8) 11.4 (6.1) 0.056
STAI_Trait 18.1 (9.1) 13.9 (6.1) 0.028
Newborn
 Weight, g 3384.5 (408.0) 3237.7 (376.3) 0.088
 Length, cm 49.9 (2.1) 48.7 (2.0) 0.009
 Head circumference, cm 34.5 (1.5) 34.4 (1.7) 0.782
 Body Mass Index, kg/m2 13.6 (1.1) 13.8 (1.3) 0.573
 Serum ferritin, μg/L# 244.7 (1.8) 200.3 (0.5) 0.375
 Presence of HFE alteration, % 33.3 28.6 0.764
Apgar 1–10 9.4 (0.4) 9.5 (0.2) 0.645
Children at 6 months
 Breastfeeding or mixed lactation, % 34.0 42.3 0.537
 Time of breastfeeding, months 2.5 (2.8) 2.9 (3.0) 0.554
 Total Parental Stress Index 110.42 (24.3) 111.10 (19.0) 0.892
  1. Data were expressed in Mean (SD) or in %
  2. STAI State–Trait Anxiety Inventory
  3. #Geometric mean