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Table 6 Zinc concentration and prevalence of low zinc concentration, 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

  Regular Regimen (RR) IMSS-Oportunidades (IO)
    Zinc concentration μ/dL Prevalence of low zinc concentration*    Zinc concentration μ/dL Prevalence of low zinc concentration*
Region/Age Groups n N Mean 95% CI % 95% CI n N Mean 95% CI % 95% CI
North             
< 6 months 94 46028 82.8 76.6, 89.0 20.6 8.1, 43.3 60 406 83.1 61.3, 104.9 35.2 11.0, 70.5
6–11 months 289 151419 86.4 74.0, 98.8 22.7 10.2, 43.2 126 1104 84.0 70.7, 97.3 21.6 6.3, 53.1
12–23 months 330 189064 81.6 66.3, 96.9 31.2 14.6, 54.5 307 2914 83.0 78.5, 87.6 21.1 8.8, 42.7
Total North 713 386511 83.6 70.8, 96.4 26.6 a 11.6, 50.1 493 4425 83.3 75.5, 91.0 22.5 a 8.2, 48.7
Center             
< 6 months 148 55798 76.3 70.5, 82.1 34.6 20.3, 52.2 33 981 72.5 49.9, 95.1 63.2 30.1, 87.2
6–11 months 293 123937 76.1 68.9, 83.2 31.3 23.1, 41.0 131 3516 79.8 73.2, 86.5 29.4 21.4, 38.8
12–23 months 351 178793 75.1 73.3, 76.9 32.3 25.6, 39.8 315 9230 79.7 74.3, 85.1 26.6 19.2, 35.6
Total Center 792 339398 75.6 71.7, 79.6 32.4 a 26.0, 39.4 479 13727 79.2 75.4, 83.0 29.9 a 24.1, 36.5
South             
< 6 months 29 15312 72.4 64.8, 79.9 38.1 21.2, 58.5 25 6605 87.5 74.9, 100.2 5.9 1.4, 22.1
6–11 months 247 81878 77.7 72.7, 82.7 25.6 17.3, 36.2 100 25968 91.6 84.7, 98.5 14.4 6.6, 28.8
12–23 months 404 124130 78.6 71.6, 85.7 26.1 18.4, 35.6 211 55166 90.4 82.9, 97.9 9.0 3.2, 22.8
Total South 680 222491 77.9 71.8, 83.9 26.6 a 18.4, 36.8 336 87740 90.5 84.3, 96.8 10.4 a 5.2, 19.5
Mexico City and periurban area             
< 6 months 60 28968 87.5 70.4, 104.5 20.2 4.0, 60.6       
6–11 months 161 82599 81.6 65.2, 98.0 25.6 19.0, 33.6       
12–23 months 198 89905 88.2 73.0, 103.3 22.5 11.8, 38.8       
Total Mexico City and periurban area 419 211391 85.4 69.1, 101.7 24.0 a 12.8, 40.4       
NATIONAL             
< 6 months 331 146106 80.1 74.3, 85.9 27.7 16.6, 42.4 118 7992 805 74.6, 96.3 14.4 6.7, 28.3
6–11 months 990 439833 81.0 74.9, 87.1 26.2 19.6, 34.2 357 30588 90.0 83.7, 96.2 16.4 9.0, 27.8
12–23 months 1283 581893 80.0 74.4, 85.6 29.1 22.2, 37.1 833 67311 88.6 82.4, 94.9 12.0 6.2, 21.7
TOTAL NATIONAL 2604 1179791 80.4 74.9, 85.8 27.9 b 20.9, 36.1 1332 108912 88.8 83.6, 94.0 13.4 b 8.3, 21.0
  1. N Population size (expanded sample)
  2. * Zinc concentration < 65 μ/dL
  3. a Comparing between regions within each regimen, RR = 0.746; IO = 0.003.
  4. b Comparing between regimens, national level, p = 0.005