TABLE 1.

Age, Gender, and Race/Ethnicity Distributions Among Normal-Weight, Overweight, and Obese Children

	Total	Normal-Weight	Overweight	Obese	Test Statistic	P
Age, mean ± SD, y	7.2 ± 1.3	6.88 ± 1.2	6.99 ± 1.3	7.74 ± 1.3	F2,307 = 14.9	.000001
Female, %	51	24.4	9.42	17.21	χ22 = 0.9	.645
Race/ethnicity, % (n)					χ24 = 4	.406
Non-Hispanic white	71.4 (220)	36.7 (113)	13.3 (41)	21.4 (66)
Black	18.8 (58)	9.1 (28)	2 (6)	7.8 (24)
Other	9.7 (30)	4.6 (14)	2 (6)	3.3 (10)
BMI z score		0.07 ± 0.7 (N = 155)	1.37 ± 0.17 (N = 53)	2.33 ± 0.38 (N = 100)

The age range was 4.1 to 10.1 years (95% confidence interval: 7.0–7.3 years); 15.6% of subjects were <6 years of age.