Table 4. Associations of Proportional Genetic Ancestry with Obesity Parameters at Ages 2 and 5.

	Age 2				Age 5
	N	β or OR(95% CI)	p-valuec	r2	N	β or OR(95% CI)	p-value	r2
BMI Z-score
%European Ancestry	362	0.02(−0.92,0.95)	0.970	<0.0005	312	−0.34(−1.32,0.65)	0.502	0.001
% Native American Ancestry	362	−0.43(−1.36,0.50)	0.361	0.002	312	0.09(−0.89,1.08)	0.850	<0.0005
% African Ancestrya	362	0.28(0.06,0.50)	0.012	0.017	312	0.14(−0.08,0.37)	0.212	0.005
Waist Circumference
%European Ancestry					313	−3.00(−9.72,3.72)	0.380	0.002
% Native American Ancestry					313	1.85(−4.87,8.57)	0.589	<0.0005
% African Ancestry					313	0.75(−0.78,2.28)	0.335	0.003
Obesity Statusb
%European Ancestry	362	0.62(0.07,5.36)	0.663		312	0.83(0.13,5.29)	0.842
% Native American Ancestry	362	0.65(0.08,5.60)	0.699		312	0.86(0.13,5.49)	0.869
% African Ancestry	362	1.91(1.11,3.29)	0.020		312	1.28(0.83,1.96)	0.267

^aProportional African ancestry was log transformed to normalize the distribution.

^bChildren were considered obese if their BMI was at or above 95^th percentile of the 2000 CDC sex-specific BMI-for-age growth charts.

^cUsing a Bonferonni correction for multiple testing (15 tests), we considered p-values less than 0.003 to be statistically significant.