Effect of Zinc on Efficacy of Iron Supplementation in Improving Iron and Zinc Status in Women
Table 2
Hemoglobin, serum ferritin, and serum zinc concentrations in women before and after daily or weekly supplementation for 12 weeks ().
Treatment groups
Baseline
Endline
Difference
Hemoglobin, g/L
Mean1(95% CI)
Mean1 (95% CI)
Mean3 (95% CI)
Weekly Fe+ Zn
88
137.6 (134.3, 140.8)
135.5 (132.6, 138.4)
Weekly Fe
97
138.7 (135.6, 141.8)
137.8 (135.0, 140.6)
Daily Fe+ Zn
84
136.4 (133.0, 139.7)
135.3 (132.3, 138.3)
Daily Fe
100
137.0(133.9, 140.0)
135.9 (133.2, 138.6)
Serum ferritin, μg/L
Mean2 (95% CI)
Mean2 (95% CI)
Mean3 (95% CI)
Weekly Fe+ Zn
88
40.1 (32.0, 50.4)
52.1 (44.5, 61.1)
29.9% (10.6, 52.6)4
Weekly Fe
97
41.2 (33.2, 51.2)
55.5 (47.6, 64.6)
34.6% (15.4, 57.0)4
Daily Fe+ Zn
84
39.0 (30.8, 49.3)
74.6 (63.2, 88.0)
91.2% (61.9, 125.9)5
Daily Fe
100
41.5 (33.6, 51.4)
75.8 (65.2, 88.2)
82.6% (57.0, 112.4)5
Serum zinc, μmol/L
Mean1 (95% CI)
Mean1 (95% CI)
Mean3 (95% CI)
Weekly Fe+ Zn
88
10.0 (9.5, 10.4)
10.4 (9.9, 10.8)
0.4 (−0.2, 1.0)
Weekly Fe
97
10.5 (10.1, 10.9)
10.5 (10.1, 11.0)
0.0 (−0.5, 0.6)
Daily Fe+ Zn
84
10.9 (10.4, 11.3)
10.8 (10.3, 11.2)
−0.1 (−0.7, 0.5)
Daily Fe
100
10.7 (10.3, 11.1)
10.6 (10.2, 11.0)
−0.1 (−0.7, 0.4)
1Least square mean (95% CI) from generalized linear model (Proc Mixed). 2Geometric mean (95% CI). 3Mean percentage (95% CI) difference between endline and baseline values. 4, 5Values in column with superscripts without a common number differ significantly, .
