Table 3.
Total and bioavailable iron intake and bioavailability in preschool children from 12 to 59 moa,b
| 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) |
aSD: Standar Desviation; p50: median
bEvery estimation was adjusted by survey design
cBioavailability of non-heme iron was estimated using the Armah et al. equation [14]
dTotal iron bioavailability was estimated adding non-heme iron and heme iron bioavailabilities
fBioavailable total iron was estimated adding bioavailable non-heme iron and bioavailable heme iron
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.