Plows et al reported a model for predicting the mass of fat in an infant. The authors are from Children's Hospital Los Angeles, University of Southern California, University of Colorado and Columbia University.
Patient selection: infant from 1-24 months
Parameters:
(1) body weight in kilograms
(2) body length in cm
(3) age in days
(4) sex (0 if female, 1 if male)
Parameter
Points
weight
(4.09644221 * (((weight) / 10)^3)) - (6.87699828 * LN((weight)/10) * (((weight) / 10)^3))
length
(-3.58838763 * (((length) / 100)^3)) - (14.70363829 * LN((length)/100) * (((length) / 100)^3))
age
(-0.03962233 * (((age) / 100)^3)) + (0.02136099 * LN((age)/100) * (((age) / 100)^3))
sex
-0.18975680 * (points for sex)
predicted fat mass in kilograms =
= SUM(points for all of the parameters) - 0.61556255
Performance:
• The adjusted R^2 is 85.4%.
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