Table 3.
Biochemical changes in iron, zinc and copper status of Peruvian infants 6, 12 and 18 months of age, by supplement type
| Age (mo) | |||
|---|---|---|---|
| 6 | 12 | 18 | |
| Hemoglobin (g/dL) Fe + Cu Fe + Cu + Zn |
112.6 ± 10.4 114.6 ± 9.7 |
116.4 ± 10.1b 117.6 ± 10.5b |
115.2 ± 9.1 117.3 ± 8.7c |
| Plasma Ferritin (umol/L)‡ Fe + Cu Fe + Cu + Zn |
27.5 (12.4, 60.7) 26.9 (12.0, 60.0) |
22.0 (11.6, 41.7)b 17.3 (9.4, 31.9)b |
26.4 (13.0, 53.7) 20.3 (11.2, 36.9) |
| Plasma Copper (umol/L) Fe + Cu Fe + Cu + Zn |
20.3 ± 4.0 21.0 ± 4.5 |
24.2 ± 3.9b 23.8 ± 4.3b |
24.0 ± 4.2 24.2 ± 3.5 |
| Plasma Zinc (umol/L) Fe + Cu Fe + Cu + Zn |
11.0 ± 2.0 11.1 ± 2.1 |
10.2 ± 1.9 11.2 ± 2.2a |
10.6 ± 1.7 11.2 ± 2.7a |
| Urinary Zinc (umol/L)‡ Fe + Cu Fe + Cu + Zn |
2.84 (0.97, 8.32) 3.21 (1.13, 9.09) |
3.08 (1.23, 7.73) 4.17 (1.78, 9.8)a |
3.79 (1.59, 9.03) 3.36 (1.30, 8.70) |
‡
Geometric mean (−1 SD, + 1 SD). Repeated measures ANOVA were used to examine changes over time and by supplement type
a
supplement × time interaction, P < 0.05
b
change in concentration from baseline, P < 0.05
c
difference by supplement type, P < 0.05.