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Table 1 General characteristics of children studied for micronutrient deficiencies and children participating in the total survey

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

  Regular Regimen (RR) IMSS-Oportunidades (IO)
  Micronutrient sample Survey sample Micronutrient sample Survey sample
  Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI
Age (months) 11.4 10.6, 13.4 8.6a 8.0, 9.2 13.4 12.3, 14.6 10.7a 12.3, 14.6
< 6 (%) 13.2 8.5, 19.7 37.7 33.0, 42.7 4.9 2.8, 8.2 27.6 24.6, 30.8
6–11 38.2 34.8, 41.7 38.2 30.6, 34.6 31.0 24.0, 39.1 27.1 25.6, 28.7
12–23 48.7 41.8, 55.6 29.7 26.1, 33.6 64.1 57.4, 70.2 45.3 42.4, 48.3
Sex Male (%) 50.4 48.4, 52.4 51.5 50.6, 52.4 51.8 48.8, 54.8 51.2 49.5, 52.9
Weight for age (Z score) -0.151 -0.308, 0.005 0.072 -0.04, 0.188 -0.604 -0.615, -0.393 -0.318b -0.454, -0.186
Height for age (Z score) -0.188 -0.297, -0.078 -0.119 -0.278, 0.039 -1.164 -1.585, -0.743 -0.873 -1.052, -0.694
Characteristics of mothers         
Years of study 9.0 8.5, 9.6 9.2 8.8, 9.5 5.3 4.4, 6.1 5.3 4.8, 5.7
Work outside home (%) 24.4 18.4, 31.5 25.6 21.8, 29.8 8.2 6.5, 10.3 9.8 7.2, 13.2
Characteristics of fathers         
Years of study 9.2 8.7, 9.7 9.3 8.9, 9.7 5.3 4.5, 6.2 5.5 5.1, 5.9
Occupation (%):         
General services 3.6 3.1, 5.2 4.0 2.3, 5.6 1.3 0.9, 2.0 1.2 0.9, 1.6
Manual laborer 27.4 23.2, 28.4 25.7 23.1, 32.1 29.0 21.9, 37.2 28.6 21.2, 37.4
Clerk 51.4 48.8, 58.0 53.4 43.0, 59.8 7.8 4.7, 12.6 7.3 4.6, 11.6
Small business owner 4.6 4.2, 5.8 4.9 3.2, 4.2 4.4 2.8, 6.9 4.6 2.8, 7.5
Technician 6.7 4.7, 6.4 5.5 5.3, 8.3 0.7 0.4, 1.1 0.6 0.3, 1.0
Professional 5.2 3.7, 5.6 4.5 3.0, 9.0 2.1 1.4, 3.1 2.2 1.4, 3.4
Art and culture 0.4 0.3, 0.7 0.5 0.2, 1.0 0.3 0.2, 0.5 0.3 0.1, 0.5
Land and agriculture 0.7 0.8, 2.5 1.4 0.3, 1.6 52.9 43.6, 62.0 53.7 44.8, 62.4
Migrant      1.3 0.7, 2.6 1.5 0.7, 2.9
  1. 95% CI: 95% confidence interval
  2. a p < 0.001 b p = 0.018