Demographic | CORAL cohort n=309 | BASELINE cohort n=1629 | P value* |

Gestational age, mean (SD) | 39.3 weeks (1.3) | 39.7 weeks (1.2) | <0.01 |

Mean weight at birth (SD) | 3.5 kg (0.5) | 3.5 kg (0.5) | 0.33 |

Proportion of females (n/N) | 45.6% (141/309) | 48.8% (795/1629) | 0.30 |

Proportion of first born (n/N) | 44.7% (138/309) | 83.9% (1364/1629) | <0.01 |

Proportion of maternal tertiary education (n/N) | 94.4% (292/309) | 87.8% (1431/1629) | <0.01 |

Mean age at assessment (SD) | 400 (24) days | 381 (18) days | <0.01 |

*Proportions test or Student’s t-test as appropriate.

BASELINE, Babies After SCOPE: Evaluating the Longitudinal Impact using Neurological and Nutritional Impact; CORAL, Impact of Corona Virus Pandemic on Allergic and Autoimmune Dysregulation in Infants Born During Lockdown.