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Table 1 Sociodemographic variables in preschool children from 12 to 59 moa,b

From: Sociodemographic factors associated with low intake of bioavailable iron in preschoolers: National Health and Nutrition Survey 2012, Mexico

Variables Age group
12–59 mo12–23 mo24–59 mo
(n = 1012)
N = 3,773,479
(n = 151)
N = 472,184
(n = 861)
N = 3,301,294
% (C.I. 95%)% (C.I. 95%)% (C.I. 95%)
Sex
 Male48.9 (44.7–53.0)47.4 (36.6–58.3)49.1 (44.6–53.6)
 Female51.1 (46.9–55.2)52.6 (41.6–63.3)50.9 (46.4–55.3)
Region, n (%)
 North17.0 (14.1–20.1)15.8 (10.2–23.5)17.0 (14.0–20.7)
 Center41.8 (37.6–46.1)31.0 (21.4–42.6)43.4 (38.6–48.1)
 South41.2 (37.2–45.2)53.2 (42.6–63.5)39.6 (35.1–44.0)
Area, n (%)a
 Rural33.8 (30.3–37.5)35.8 (26.7–46.0)33.6 (29.6–37.7)
 Urban66.2 (62.4–69.6)64.2 (53.9–73.2)66.4 (62.3–70.3)
SES, n (%)b
 Low36.2 (32.1–40.4)42.2 (32.0–52.9)35.3 (30.8–40.0)
 Middle40.0 (35.5–44.5)41.2 (31.3–51.8)39.8 (34.9–44.8)
 High23.8 (19.8–28.4)16.6 (8.9–28.5)24.9 (20.5–29.8)
Maternal education levelc
 Elementary school34.6 (30.2–39.0)29.4 (20.9–39.5)35.3 (30.6–40.2)
 Middle school43.1 (38.7–47.7)38.7 (29.0–49.1)43.8 (38.9–48.7)
 High school14.9 (12.0–18.2)19.8 (12.7–29.5)14.1 (11.1–17.8)
 Bachelor’s degree or higher7.4 (4.8–11.1)12.1 (5.1–26.1)6.8 (4.1–10.7)
  1. a Rural: localities with < 2500 inhabitants, urban ≥2500 inhabitants
  2. b SES: socioeconomic status, estimated by means of analyses of main components with information of the dwelling characteristic and household goods
  3. c Available information for 974 children
  4. *Significant differences P < 0.05; Chi square test. Analyses adjusted by survey design