Table 1: Sample sizes by age, race/ethnicity, and blood draw session. Data from National Health and Nutrition Examination Survey 2011-2012.

	Age Group
	6-11 Years				12-19 Years				≥ 20 Years
	Un-weighted		Weighted		Un-weighted		Weighted		Un-weighted		Weighted
	N	%	N	%	N	%	N	%	N	%	N	%
Total	456	100.0	8915143	100.0	554	100.0	15238105	100.0	2409	100.0	100673365	100.0
Race/Ethnicity
Non-Hispanic White	114	25.0	4888867	54.8	128	23.1	8220734	53.9	922	38.3	68308850	67.9
Non-Hispanic Black	122	26.8	1251732	14.0	167	30.1	2276602	14.9	585	24.3	9795640	9.7
Hispanic	157	34.4	2119202	23.8	153	27.6	3356034	22.0	490	20.3	14952756	14.9
Non-Hispanic Asian	37	8.1	312789	3.5	77	13.9	685044	4.5	336	13.9	4916685	4.9
Other Race/Ethnicities	26	5.7	342554	3.8	29	5.2	699691	4.6	76	3.2	2699434	2.7
Blood Draw Session
Morning	184	40.4	3845195	43.1	272	49.1	7397651	48.5	1193	49.5	51184273	50.8
Afternoon	166	36.4	3053377	34.2	195	35.2	51113274	335.4	875	36.3	33156508	32.9
Evening	106	23.2	2016571	22.6	87	15.7	2727179	17.9	341	14.2	16332584	16.2
Smoking Status
Nonsmoker^*	N/A		N/A		486	87.7	13228890	86.8	1685	69.9	71225701	70.7
Smoker^*	N/A		N/A		67	12.1	1982102	13.0	722	30.0	29287753	29.1

*Total may not sum to 100% because of missing values