Prevalence of anemia and deficiency of iron, folic acid, and zinc in children younger than 2 years of age who use the health services provided by the Mexican Social Security Institute

Duque, Ximena; Flores-Hernández, Sergio; Flores-Huerta, Samuel; Méndez-Ramírez, Ignacio; Muñoz, Sergio; Turnbull, Bernardo; Martínez-Andrade, Gloria; Ramos, Rosa I; González-Unzaga, Marco; Mendoza, María E; Martínez, Homero

doi:10.1186/1471-2458-7-345

Table 2 Hemoglobin concentration and prevalence of anemia, by region, age group, and care regimen

From: Prevalence of anemia and deficiency of iron, folic acid, and zinc in children younger than 2 years of age who use the health services provided by the Mexican Social Security Institute

Region/Age groups	Regular Regimen (RR)						IMSS-Oportunidades (IO)
	n	N	Hemoglobin concentration g/dL*		Prevalence of anemia**		n	N	Hemoglobin concentration g/dL*		Prevalence of anemia**
			Mean	95% CI	%	95% CI			Mean	95% CI	%	95% CI
North
< 6 months	97	49416	11.5	10.9, 12.0	5.1	2.7, 9.6	142	992	11.7	11.3, 12.1	12.2	7.4, 19.4
6–11 months	321	181422	11.5	11.1, 11.9	14.5	9.0, 22.6	223	1891	11.6	11.2, 12.1	18.0	7.1, 38.4
12–23 months	367	223234	11.7	11.5, 11.9	15.2	10.6, 21.4	519	5073	11.7	11.3, 12.0	21.3	8.0, 45.9
Total North	785	454072	11.6	11.2, 12.0	13.8 ^a	9.8, 19.2	884	7956	11.7	11.3, 12.0	19.4 ^a	8.2, 39.2
Center
< 6 months	148	53494	11.4	10.9, 11.8	4.5	1.4, 14.0	79	2315	13.7	10.9, 16.4	11.2	5.8, 20.4
6–11 months	291	115119	11.7	11.4, 12.0	14.4	9.7, 20.8	273	6975	12.1	11.4, 12.8	17.8	6.3, 41.1
12–23 months	324	151064	11.7	11.1, 12.2	19.1	13.9, 25.7	612	16858	12.2	11.6, 12.9	18.3	10.7, 29.5
Total Center	763	319677	11.7	11.2, 12.2	15.0 ^a	10.0, 21.8	964	26148	12.3	11.8, 12.9	17.6 ^a	9.4, 30.4
South
< 6 months	27	14792	10.7	10.2, 11.2	31.3	20.6, 44.5	36	8701	11.3	10.9, 11.8	16.1	4.7, 42.5
6–11 months	227	78181	11.0	10.5, 11.4	36.1	20.0, 56.1	135	38100	11.6	11.4, 11.9	14.9	10.6, 20.5
12–23 months	351	110062	11.1	10.6, 11.6	39.2	23.1, 58.1	290	77882	11.8	11.5, 12.0	22.5	17.4, 28.6
Total South	605	203035	11.0	10.5, 11.5	37.4 ^a	22.6, 55.0	461	124683	11.7	11.5, 11.9	19.7 ^a	16.4, 23.6
Mexico City ^&
< 6 months	67	32810	10.9	10.7, 11.0	15.6	13.2, 18.3
6–11 months	183	111755	11.2	11.0, 11.5	27.3	21.0, 34.6
12–23 months	245	140561	11.4	11.2, 11.6	25.5	22.2, 29.1
Total Mexico City ^&	495	285126	11.3	11.0, 11.5	25.1 ^a	21.2, 29.3
NATIONAL
< 6 months	339	150512	11.2	11.0, 11.4	9.8	6.3, 14.8	257	12008	11.8	11.0, 12.6	14.8	5.6, 33.6
6–11 months	1022	486477	11.4	11.2, 11.6	20.9	17.0, 25.4	631	46966	11.7	11.4, 11.9	15.5	11.2, 21.0
12–23 months	1287	624921	11.5	11.4, 11.7	22.7	19.2, 26.6	1421	99813	11.8	11.6, 12.1	21.7	17.3, 27.0
TOTAL NATIONAL	2648	1261910	11.4	11.3, 11.6	20.5 ^b	17.3, 24.1	2309	158787	11.8	11.6, 12.0	19.3 ^b	16.1, 23.0

N Population size (expanded sample)
* Hemoglobin concentration adjusted by altitude.
** Hemoglobin (Hb) < 13.5 g/dL for children under 2 weeks of age, Hb< 12.5 g/dL for children between 2 and 3 weeks of age, Hb <10 g/dL for children between 1 and 2 months old, Hb< 9.0 for children between 2 and 3 months old Hb< 9.5 for children between 3 and 6 months old, Hb<10.5 g/dL for children between 6 and <12 months old and Hb<10.7 g/dL for children between 12 and 23 months old.
^& Mexico City and periurban area
^a Comparing between regions, RR = 0.001; IO = 0.908.
^b Comparing between regimens, national level, p = 0.635

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