. Author manuscript; available in PMC: 2011 May 5.

Published in final edited form as: Int J Body Compos Res. 2005 Jan 1;3(1):25–30.

Table 3.

Linear regression analysis for total and regional body composition parameters measured by DPX-L and Prodigy DXA.

Region	Parameter	Regression equation	Line of Identity		Regression
Region	Parameter	Regression equation	Slope (P)^a	Intercept (P)^a	r²	P	SEE
Total body	BMD (g/cm²)	PROD = 1.069DPX − 0.055	<0.001	<0.001	0.977	<0.001	0.02
	BMC (kg)	PROD = 1.037DPX − 0.021	<0.01	0.576	0.983	<0.001	0.09
	FM (kg)	PROD = 0.994DPX + 0.886	0.328	<0.001	0.996	<0.001	0.68
	LTM (kg)	PROD = 1.009DPX − 0.465	0.164	0.113	0.996	<0.001	0.78
	BM (kg)	PROD = 1.007DPX + 0.265	<0.001	<0.05	0.998	<0.001	0.36
	Fat %	PROD = 0.982DPX + 1.366	0.080	<0.001	0.989	<0.001	1.01

Arms	BMD (g/cm²)	PROD = 0.954DPX + 0.049	<0.05	<0.05	0.946	<0.001	0.04
	BMC (kg)	PROD = 0.961DPX + 0.023	<0.05	<0.001	0.969	<0.001	0.02
	FM (kg)	PROD = 1.034DPX + 0.189	0.439	<0.001	0.845	<0.001	0.43
	LTM (kg)	PROD = 0.999DPX + 0.289	0.969	<0.01	0.968	<0.001	0.39
	Fat %	PROD = 1.022DPX + 1.122	0.431	<0.001	0.931	<0.001	2.82

Legs	BMD (g/cm²)	PROD = 1.063DPX − 0.017	<0.001	0.393	0.978	<0.001	0.03
	BMC (kg)	PROD = 0.970DPX + 0.039	<0.05	<0.001	0.985	<0.001	0.03
	FM (kg)	PROD = 0.942DPX + 0.354	<0.001	<0.01	0.977	<0.001	0.60
	LTM (kg)	PROD = 0.969DPX + 0.309	0.093	0.309	0.964	<0.001	0.86
	Fat %	PROD = 0.980DPX + 0.684	<0.05	<0.05	0.992	<0.001	1.03

Trunk	BMD (g/cm²)	PROD = 1.004DPX + 0.001	0.875	0.951	0.949	<0.001	0.03
	BMC (kg)	PROD = 1.046DPX + 0.010	0.211	0.741	0.887	<0.001	0.09
	FM (kg)	PROD = 1.016DPX + 0.705	0.315	<0.001	0.976	<0.001	0.88
	LTM (kg)	PROD = 0.997DPX − 0.294	0.873	0.462	0.968	<0.001	1.02
	Fat %	PROD = 0.985DPX + 2.519	0.409	<0.001	0.964	<0.001	1.94

P for slope = 1, and intercept = 0.