Table 3 The BPD, OFD, HC, FL, AC, AFI, S/D, PI, RI MoM values were converted according to gestational age

21⁺⁰ ~ 27⁺⁶

BPD

0.98 (0.95–1.00)^**

1.00 (0.97–1.03)

1.02 (0.98–1.05)^**

 < 0.001

OFD

0.97 (0.94–1.00)^**

1.00 (0.97–1.03)

1.01 (0.99–1.04)^**

 < 0.001

HC

0.98 (0.95–1.00)^**

1.00 (0.98–1.02)

1.02 (0.99–1.04)^**

 < 0.001

FL

0.98 (0.95–1.00)^**

1.00 (0.98–1.04)

1.02 (1.00–1.05)^**

 < 0.001

AC

0.98 (0.94–1.00)^**

1.00 (0.97–1.03)

1.03 (1.00–1.06)^**

 < 0.001

AFI

0.95 (0.84–1.06)^**

1.00 (0.89–1.12)

1.03 (0.94–1.14)^**

 < 0.001

S/D

1.01 (0.89–1.16)

1.00 (0.90–1.11)

0.97 (0.86–1.04)^**

 < 0.001

PI

1.00 (0.90–1.11)

1.00 (0.91–1.09)

0.98 (0.88–1.05)^**

 < 0.001

RI

1.00 (0.94–1.07)

1.00 (0.94–1.04)

0.99 (0.91–1.02)^**

 < 0.001

PT

0.96 (0.88–1.04)^**

1.00 (0.92–1.08)

1.04 (0.96–1.12)^**

 < 0.001

28⁺⁰ ~ 32⁺⁶

BPD

0.96 (0.94–0.99)^**

1.00 (0.98–1.03)

1.01 (1.00–1.05)^**

 < 0.001

OFD

0.97 (0.94–0.99)^**

1.00 (0.98–1.02)

1.02 (0.99–1.04)^**

 < 0.001

HC

0.96 (0.95–0.99)^**

1.00 (0.98–1.02)

1.02 (1.00–1.04)^**

 < 0.001

FL

0.97 (0.95–1.00)^**

1.00 (0.98–1.03)

1.02 (1.00–1.05)^**

 < 0.001

AC

0.95 (0.93–0.98)^**

1.00 (0.98–1.02)

1.04 (1.01–1.06)^**

 < 0.001

AFI

0.98 (0.82–1.12)^*

1.00 (0.89–1.13)

1.07 (0.97–1.23)^**

 < 0.001

S/D

1.05 (0.96–1.14)^**

1.00 (0.90–1.09)

0.96 (0.87–1.06)^**

 < 0.001

PI

1.05 (0.96–1.14)^**

1.00 (0.89–1.09)

0.96 (0.86–1.05)^**

 < 0.001

RI

1.03 (0.97–1.08)^**

1.00 (0.93–1.05)

0.97 (0.90–1.03)^**

 < 0.001

PT

0.97 (0.90–1.06)

1.00 (0.93–1.06)

1.03 (0.97–1.12)^**

 < 0.001

33⁺⁰ ~ 39⁺⁶

BPD

0.95 (0.93–0.98)^**

1.00 (0.98–1.02)

1.02 (1.00–1.05)^**

 < 0.001

OFD

0.96 (0.95–0.99)^**

1.00 (0.98–1.02)

1.02 (1.00–1.04)^**

 < 0.001

HC

0.96 (0.94–0.98)^**

1.00 (0.98–1.02)

1.02 (1.01–1.04)^**

 < 0.001

FL

0.96 (0.93–0.99)^**

1.00 (0.98–1.02)

1.02 (1.00–1.03)^**

 < 0.001

AC

0.93 (0.91–0.96)^**

1.00 (0.98–1.02)

1.05 (1.03–1.07)^**

 < 0.001

AFI

0.88 (0.77–1.01)^**

1.00 (0.89–1.15)

1.11 (0.97–1.33)^**

 < 0.001

S/D

1.05 (0.96–1.19)^**

1.00 (0.91–1.11)

0.95 (0.86–1.06)^**

 < 0.001

PI

1.05 (0.95–1.19)^**

1.00 (0.88–1.12)

0.94 (0.82–1.05)^**

 < 0.001

RI

1.04 (0.96–1.11)^**

1.00 (0.91–1.07)

0.96 (0.87–1.04)^**

 < 0.001

PT

0.97 (0.91–1.06)^**

1.00 (0.94–1.06)

1.03 (1.00–1.11)^**

 < 0.001