Question: how to calculate efw in pregnancy?
Answer: We calculated EFW using the formula by Hadlock et al: Log10 EFW = 1.335 − 0.0034(AC)(FL) + 0.0316 (BPD) + 0.0457 (AC) + 0.1623 (FL). [16] We used this formula because it has previously been found to have the least bias and best precision in predicting measured weight at birth compared with 13 other formulas.