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Table 3 Total and bioavailable iron intake and bioavailability 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

 

12–59 mo

(n = 1012)

12–23 mo

(n = 151)

24–59 mo

(n = 861)

Mean ± SD (p50)

Mean ± SD (p50)

Mean ± SD (p50)

Total Iron (mg/d)

9.22 ± 6.77 (7.78)

7.48 ± 6.31 (6.62)

9.47 ± 6.77 (7.91)

Non-heme Iron (mg/d)

8.98 ± 6.72 (7.57)

7.32 ± 6.30 (6.21)

9.20 ± 6.72 (7.77)

Heme Iron (mg/d)

0.24 ± 0.33 (0.11)

0.15 ± 0.25 (0.03)

0.25 ± 0.34 (0.11)

Non-heme Iron bioavailability(%)c

8.33 ± 5.08 (7.01)

11.21 ± 7.46 (9.70)

7.92 ± 4.55 (6.75)

Total Iron bioavailability (%) d

9.15 ± 5.36 (7.83)

12.03 ± 7.83 (10.49)

8.74 ± 4.83 (6.73)

Bioavailable non-heme Iron, (mg/d)

0.68 ± 0.70 (0.51)

0.77 ± 0.76 (0.52)

0.67 ± 0.69 (0.51)

Bioavailable heme Iron, (mg/d)e

0.06 ± 0.09 (0.02)

0.04 ± 0.07 (0.01)

0.06 ± 0.09 (0.03)

Total FeBio, (mg/d) f

0.75 ± 0.73 (0.60)

0.81 ± 0.76 (0.59)

0.74 ± 0.71 (0.59)

  1. aSD: Standar Desviation; p50: median
  2. bEvery estimation was adjusted by survey design
  3. cBioavailability of non-heme iron was estimated using the Armah et al. equation [14]
  4. dTotal iron bioavailability was estimated adding non-heme iron and heme iron bioavailabilities
  5. fBioavailable total iron was estimated adding bioavailable non-heme iron and bioavailable heme iron
  6. eBioavailable heme iron was estimated using conservative values; value = 35% if serum ferritin (SF) < 12 μg/L and value = 25% if SF ≥12 μg/L.