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Table 4 Prediction equations for body weight (in g) from measured variables (in mm)

From: In vivo quantification of embryonic and placental growth during gestation in mice using micro-ultrasound

From crown-rump length (CRL):
BW = -0.696 + 0.0890(CRL)
R2 = 0.938
From biparietal diameter (BPD):
BW = -34.08 + 32.10(BPD) - 11.130(BPD)2 + 1.68(BPD)3-0.093(BPD)4
R2 = 0.945
From abdominal circumference (AC):
BW = 4.20 - 0.76(AC) + 0.045(AC)2 - 0.00078(AC)3
R2 = 0.957
From crown-rump length (CRL) and abdominal circumference (AC):
BW = -0.757 + 0.0453(CRL) + 0.0334(AC)
R2 = 0.962
  1. BW, body weight