Table 2.

Prerandomization Data for Infants According to Trial Diet

Randomized GroupsReference Group
Postdischarge Formulan = 113Term Formula n = 116Breastfed
n = 65
Birth weight (g)1378 (283)1362 (311)1427 (305)
Birth weight <10th centile (n(%))25 (35)29 (41)17 (24)
Gestation (wk)30.7 (2.5)30.8 (2.5)31.3 (2.6)
Boys (n(%))58 (51)55 (47)30 (40)
5 minute Apgar 9 (8,10)9 (8,10)9 (8,10)
Ventilation required (n(%))55 (50)53 (47)23 (37)
Days of ventilation 4 (1,7)3 (1,8)4 (2,10)
Oxygen required (n(%))75 (68)71 (63)35 (56)
Days of supplemental oxygen 6 (1,24)5 (2,30)6 (2,27)
TPN required (n(%))23 (32)22 (31)21 (60)*
Days of total parenteral nutrition 7 (3,11)7 (3,10)6 (4,12)
Social class 1 or 2 (n(%))15 (14)31 (27)28 (49)*
Mothers with degree/higher professional qualification11 (10)16 (15)27 (42)*
Maternal age (y)28.2 (5.5)28.5 (5.9)31.5 (5.2)**
Maternal weight (kg)60.2 (12.3)61.8 (12.9)62.1 (8.9)
Maternal height (cm)160.6 (6.8)162.3 (6.5)162.6 (7.6)
Maternal occipto-frontal head circumference (cm)54.3 (1.6)54.8 (1.7)55.8 (1.5)2-165
Paternal weight (kg)78.5 (13.0)80.8 (14.7)77.7 (9.4)
Paternal height (cm)175.9 (7.9)177.6 (8.2)176.3 (7.0)
Paternal occipto-frontal head circumference (cm)57.4 (2.2)58.4 (3.1)58.2 (1.7)
  • Data are mean (SD) unless otherwise stated.

  • * P < .01 breastfed compared with formula fed groups.

  • ** P = .002 breastfed compared with formula groups; P = .001 versus PDF, P = .005 versus TF.

  • F2-165 P < .001 breastfed compared with formula groups; P < .001 versus PDF and TF.

  • Median (25th, 75th centiles).