An equation proposed by Rose (1987) uses femur length and abdominal diameter, since (1) femur length has the advantage of accurately reflecting fetal growth patterns, and (2) measurement of abdominal diameter can be done more accurately than abdominal circumference.


estimated fetal weight in grams =

= e ^ (4.3726 + (0.2053 * ((abdominal diameter in cm) + (femoral diaphysis length in cm))))


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