Skip to main content

Table 5 Folic acid concentration and prevalence of folic acid deficiency, 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 Serum folic acid concentration ng/mL Prevalence of folic acid deficiency* n N Serum folic acid concentration ng/mL Prevalence of folic acid deficiency*
    Mean 95% CI % 95% CI    Mean 95% CI % 95% CI
North             
< 6 months 96 48932 102.7 51.0, 154.3 25.2 11.0, 47.9 97 601 124.8 105.0, 144.6 6.6 2.5, 16.3
6–11 months 298 176084 120.9 65.4, 176.3 14.5 3.2, 47.1 154 1169 120.5 98.6, 142.4 6.9 2.4, 18.3
12–23 months 314 196452 112.1 72.0, 152.2 13.4 2.7, 46.5 362 2640 125.8 110.8, 140.9 3.1 1.4, 6.5
Total North 708 421468 114.7 55.9, 173.4 15.2 a 3.3, 48.7 613 4410 124.3 109.2, 139.4 4.6 a 2.3, 9.0
Center             
< 6 months 142 49708 131.4 100.6, 162.2 9.7 2.2, 33.5 72 2065 163.6 149.4, 177.8 0.0 ---
6–11 months 291 119236 149.0 122.1, 175.9 4.3 1.4, 13.0 239 6278 168.1 142.3, 193.9 3.0 0.8, 11.0
12–23 months 333 159516 127.5 99.6, 155.4 6.4 1.7, 21.7 546 15902 147.1 113.6, 180.7 1.4 0.2, 7.3
Total Center 766 328460 135.9 103.8, 167.9 6.1 a 1.7, 20.2 857 24246 154.0 124.9, 183.0 1.7 a 0.4, 6.2
South             
< 6 months 10 3973 118.7 58.3, 179.2 16.6 3.6, 51.7 25 6861 155.9 135.1, 176.7 0.0 ---
6–11 months 202 62292 111.7 81.0, 142.4 8.6 1.6, 36.1 110 34142 134.4 108.5,160.3 5.8 2.4, 13.3
12–23 months 320 85651 111.4 88.4, 134.3 14.1 4.5, 36.1 228 68987 112.0 81.9, 142.1 12.6 3.0, 40.4
Total South 532 151917 111.7 82.8, 140.5 11.9 a 3.4, 34.2 363 109991 121.7 92.9, 150.5 9.7 a 2.5, 30.6
Mexico City &             
< 6 months 45 23968 107.0 103.6, 110.3 5.4 4.1, 7.2       
6–11 months 118 63812 121.3 108.7, 133.9 5.0 2.2, 11.0       
12–23 months 137 70367 106.8 104.2, 109.5 5.6 0.7, 32.1       
Total Mexico City & 300 158146 112.7 105.0, 120.3 5.1 a 2.6, 10.1       
NATIONAL             
< 6 months 293 126581 115.3 87.3, 143.2 15.1 5.8, 33.7 194 9528 155.6 139.9, 171.3 0.4 0.1, 1.4
6–11 months 909 421424 127.5 101.9, 153.2 9.3 3.2, 24.2 503 41589 139.1 119.7, 158.5 5.4 2.6, 11.0
12–23 months 1104 511986 116.0 98.0, 134.1 10.3 4.3, 22.5 1136 87530 118.8 95.2, 142.4 10.2 2.7, 32.0
TOTAL NATIONAL 2306 1059991 120.5 99.3, 141.7 10.4 b 4.0, 24.4 1833 138646 127.4 105.5, 149.4 8.1 b 2.4, 23.7
  1. N Population size (expanded sample)
  2. * ≤ 57 ng/mL in whole blood sample
  3. & Mexico City and periurban area
  4. a Comparing between regions within each regimen, RR = 0.458; IO = 0.046.
  5. b Comparing between regimens, national level, p = 0.720