Table 1

Characteristics of infants at time of initial assessment for parts 1 and 2 of study: median (interquartile range)

VariablePart 1 of studyp valuePart 2 of studyp value
Group TFGroup CGroup TFGroup C
Number21212631
Male:Female ratio1:1.11:1.311-150 1:1.81:1.10.41-150
Gestation (weeks)29(28, 30)29(27, 30)0.929(27, 30)28(26, 29.5)0.3
Birthweight (kg)1.18(0.97, 1.39)1.13(0.86, 1.48)0.91.04(0.9, 1.37)1(0.8, 1.35)0.4
Birthweight ratio0.86(0.71, 0.98)0.89(0.81, 1.06)0.50.86(0.73, 1.01)0.98(0.77, 1.16)0.3
CRIB score4(3, 7)3(2, 4)0.14(3, 7)4(2, 5)0.3
Postmenstrual age (weeks)32.9(31.7, 33.9)32.7(31.9, 34.3)0.832(30, 33)31(29, 32.5)0.3
Postnatal age (days)27(20, 34)26(14, 37)0.82121
Weight at study (kg)1.33(1.15, 1.62)1.49(1.16, 1.67)0.71.4(1.2, 1.63)1.52(0.95, 1.68)0.2
Feed amount (ml)6(4, 7)5(4, 6)0.39(7, 10)8(7, 10)0.3
Days to full milk feeds26(23, 31)31(16, 40)0.629(22, 40)34(26, 48)0.1
Antenatal dexamethasone (doses)1.5(1, 2)2(0, 2)0.51(0, 2)2(0, 2)0.6
Postnatal dexamethasone (days)14(0, 26.5)5(0, 31)0.614(0, 21)21(0, 45)0.1
Breast milk:preterm formula milk ratio (majority feed)1:1.11:1.630.81-150 1:0.81:1.20.61-150
  • 1-150  Fisher’s exact test