Table 1.

Description of Sample for Creating Reference Curves

	Non-African American Males		African American Males		Non-African American Females		African American Females
Number of participants	746		246		788		233
Number of observations	3777		1096		3970		1122
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Age, years	13.73	4.26	13.88	4.31	13.45	4.16	13.37	3.86
Height (Z-score)	0.13	0.83	0.32	0.86	0.14	0.86	0.21	0.87
Weight (Z-score)	0.28	0.82	0.50	0.84	0.30	0.82	0.60	0.76
BMI (Z-score)	0.24	0.90	0.40	0.87	0.29	0.84	0.59	0.82

Abbreviations: BMI, body mass index; SD, standard deviation.