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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
  1. N Population size (expanded sample)
  2. * Hemoglobin concentration adjusted by altitude.
  3. ** 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.
  4. & Mexico City and periurban area
  5. a Comparing between regions, RR = 0.001; IO = 0.908.
  6. b Comparing between regimens, national level, p = 0.635