TABLE 1.

Demographics and prevalence estimates of ID, based on TBI, among US toddlers aged 12–23 mo from NHANES 2003–2010¹

	Demographic characteristics
	n	% (95% CI)	Prevalence of ID based on TBI,2 % (95% CI)
Total	615	—	15.1 (11.7, 18.5)
Survey years
2003–2004	162	26.9 (19.5, 34.3)	16.1 (8.2, 24.0)a,b
2005–2006	133	20.6 (14.3, 26.9)	18.4 (10.3, 26.5)a
2007–2008	137	22.5 (17.1, 27.9)	19.1 (11.6, 26.5)a
2009–2010	183	30.0 (24.1, 35.9)	8.8 (5.5, 12.1)b
Sex
Female	307	51.6 (45.5, 57.6)	12.1 (7.8, 16.5)a
Male	308	48.4 (42.4, 54.5)	18.2 (12.9, 23.5)a
Age, mo
12–17	293	47.3 (42.6, 52.1)	13.4 (9.4, 17.3)a
18–23	322	52.7 (47.9, 57.4)	16.6 (11.4, 21.9)a
Race/ethnicity
NH white	176	51.4 (43.9, 58.8)	12.5 (6.7, 18.3)a
NH black	154	15.9 (12.8, 18.9)	13.7 (7.7, 19.6)a
Mexican American	199	19.6 (14.9, 24.3)	19.1 (13.2, 25.0)a
Other	86	13.1 (9.4, 16.9)	20.9 (11.4, 30.4)a
Family income
<130% of poverty:income ratio	338	42.4 (37.0, 47.7)	18.4 (13.7, 23.0)a
≥130% of poverty:income ratio	242	57.6 (52.3, 63.0)	12.1 (7.2, 16.9)a

¹ID was defined as TBI <0 mg/kg. ID, iron deficiency; NH, non-Hispanic; TBI, total-body iron stores.

²All analyses were weighted and took into account the complex survey design. Within a group, values with different superscript letters had significantly different prevalence estimates (logistic regression, P < 0.05).