Table 4.

Regression analysis results for the prediction of %BF from WtHR; boys and girls aged 6–14 years, Madrid, Spain, 2007–2008

	Non-standardized coefficients (R)		Standardized coefficients (R 2)
	B	Typical error	β	t	P
Boys
Constant	−28·362	0·396		−71·709	<0·001
WtHR	106·500	0·876	0·811	121·604	<0·001
	%BF = 106·50 × WtHR – 28·36
Girls
Constant	−15·140	0·537		−28·194	<0·001
WtHR	89·732	1·209	0·619	74·216	<0·001
	%BF = 89·73 × WtHR – 15·14

%BF, percentage body fat; WtHR, waist-to-height ratio.