**Table 4:** Median Multiples of the Median (MoM) for free β-hCG and PAPP-A, CRL, NT, maternal weight and height in the IUGR group (birth weight below the 3^{rd} centile) compared to the normal group.

Fetal weight (percentile) | Median | SD | P value | |
---|---|---|---|---|

free β-hCG (MoM) | > 10^{t}h |
1.26 | 0.86 | < 0.001 |

< 3^{rd} |
1.06 | 0.75 | ||

PAPP-A (MoM) | > 10^{th} |
1.12 | 0.81 | < 0.001 |

< 3^{rd} |
0.85 | 0.66 | ||

CRL (percentile) | > 10^{th} |
58.74 | 21.45 | 0.001 |

< 3^{rd} |
55.04 | 21.25 | ||

NT (percentile) | > 10^{th} |
92.71 | 17.63 | 0.821 |

< 3^{rd} |
92.92 | 16.61 | ||

Maternal weight (kg) | > 10^{th} |
66.05 | 13.88 | 0.014 |

< 3^{rd} |
64.19 | 14.79 | ||

Maternal height (cm) | > 10^{th} |
163 | 6.2 | < 0.001 |

< 3^{rd} |
161.06 | 6 |