Table 3

Regression models developed for the prediction of total body water in Malawian adolescents aged 10—18 years

	Predictors	β (SE)	P value	R²	SEE	Collinearity statistics
	Predictors	β (SE)	P value	R²	SEE	Tolerance	VIF
FFM	Intercept	−4.316 (2.54)	0.093	0.926	1.95
	Ht²/R	0.425 (0.067)	0.001			0.152	6.56
	Weight	0.344 (0.052)	0.001			0.184	5.43
	Age	0.500 (0.134)	0.001			0.740	1.35
	Sex	1.287 (0.500)	0.012			0.672	1.49
	Xc	0.019 (0.029)	0.523			0.716	1.40
TBW	Intercept	−2.152 (1.92)	0.264	0.922	1.47
	Ht²/R	0.328 (0.051)	<0.001			0.152	6.561
	Weight	0.249 (0.040)	<0.001			0.184	5.428
	Age	0.307 (0.101)	0.003			0.740	1.351
	Sex	0.910 (0.377)	0.018			0.672	1.489
	Xc	0.015 (0.022)	0.503			0.716	1.397

FFM, fat-free mass; Ht²/R, Resistance Index (height²/resistance); SEE, SE of the estimate; Sex, male=1, female=0; TBW, total body water; VIF, variance inflation factor; Xc, reactance.