. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: Public Health Nutr. 2018 Oct 18;22(1):147–156. doi: 10.1017/S1368980018002549

Table 3.

Regression equations to estimate weight in infants and children aged 0–5.9 years developed in the training set (n = 1016)^*

	Equation	R² marginal	SEE (kg)
Model 1	Weight (kg) = 15.89 + 0.35xHispanic + 0.25xL - 10.63xFW + 1.12xFW²	0.94	1.23
Model 2	Weight (kg) = 6.91 + 0.40xHispanic + 0.21xL - 2.51xFC + 0.10xFC²	0.97	0.96
Model 3	Weight (kg) = 19.45 + 1.15×A + 0.22xHispanic + 0.76xUL - 9.21xFW + 1.03xFW²	0.91	1.46
Model 4	Weight (kg) = 6.25 + 1.04xA + 0.37xHispanic + 0.59xUL - 1.65xFC + 0.09xFC²	0.96	1.09

A, age (y); L, length/height (cm); R²marginai, coefficient of determination for fixed effects; SEE, standard error of estimate (kg); FC, forearm circumference (cm); UL, ulna length (cm); FW, forearm width (cm).

Equations were obtained from mixed-effects linear regression analysis using study center as a random effect.