Table 3.

Regression coefficients with standard errors and P values for independent variables* in final model with infant fat mass (kg) as dependent variable

Independent Variable	Coefficient	Standard Error	P
SConstant	-0.012	0.246	0.962
Infant Gender	-0.064	0.014	< 0.001
Ethnicity	0.046	0.017	0.010
Age at Measurement (days)	0.024	0.010	0.023
Weight (kg)	-0.150	0.146	0.306
Weight2 (kg2)	0.055	0.022	0.013
Sum of Skin-fold Thicknesses (mm)	0.020	0.003	< 0.001

R² = 0.81, MSE = 0.08 kg

* Infant gender: 1 = male and 0 = female; Ethnicity: 1 = Hispanic and 0 = not Hispanic; Age at measurement: number of days post-delivery; Weight: weight at measurement (kg); Weight²: weight at measurement squared (kg²); Sum of Skin-fold Thicknesses: sum of triceps, sub scapular, and thigh skin-fold thicknesses (mm)