Variable | Randomized Formula-Fed Groups | Breastfed Reference Group (N = 101) | Comparison of 3 Dietary Groups, P^{a} | |
---|---|---|---|---|

Control (N = 100) | Nucleotide Supplemented (N = 100) | |||

At birth | ||||

Male gender, % (n) | 56 (56) | 61 (61) | 51 (51) | .4 |

Weight, g | 3458 ± 527 | 3459 ± 590 | 3466 ± 497 | .9 |

Weight, z score | 0.3 ± 1.0 | 0.1 ± 1.2 | 0.1 ± 1.0 | .6 |

Gestation, wk | 39.2 ± 1.3 | 39.5 ± 1.4 | 39.6 ± 1.1 | .1 |

SGA, % (n)^{b} | 5 (5) | 15 (15) | 10 (10) | .06 |

Social class, nonmanual labor, % (n) | 39 (39) | 41 (41) | 81 (81) | <.001 |

Mother with academic degree, % (n) | 8 (8) | 8 (8) | 52 (52) | <.001 |

Cesarean birth, % (n) | 40 (40) | 32 (32) | 31 (31) | .4 |

At randomization | ||||

Age, d | 7.5 ± 2.8 | 7.1 ± 2.6 | — | — |

Weight, g | 3437 ± 510 | 3457 ± 595 | — | — |

Weight, z score | −0.6 ± 1.0 | −0.5 ± 1.2 | — | — |

Length, cm | 50.3 ± 2.2 | 50.5 ± 2.8 | — | — |

Length, z score | −0.7 ± 1.1 | −0.5 ± 1.4 | — | — |

OFC, cm | 35.2 ± 1.3 | 35.3 ± 1.5 | — | — |

OFC, z score | −0.3 ± 1.0 | −0.1 ± 1.1 | — | — |

Values are mean ± SD analyzed by using the Student's

*t*test or percent (*n*) analyzed by using the χ^{2}test. There was a slight loss of*n*for some variables (<2%). — indicates data not applicable.↵a The 3 dietary groups were compared by using analysis of variance for continuous data and χ

^{2}for categorical data.↵b There were no significant differences between infants in the randomized formula-fed groups except for the number of infants born SGA (defined as birth weight <10th centile for gestation and gender) (

*P*= .02).