Dung et al reported equations for estimating fat-free mass (FFM) in preterm Caucasian infants in the first months of life. The authors are from University Children's Hospital in Greifswald, Germany.
Patient selection: preterm infant, Caucasian
Parameters:
(1) sex
(2) height in cm
(3) impedance in Ohms
(4) weight in kilograms
For boys:
FFM in kg =
= (0.05 * ((height)^2) / (impedance)) + (0.68 * (weight)) + 0.40
For girls:
= (0.04 * ((height)^2) / (impedance)) + (0.71 * (weight)) + 0.29
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