Table 2.
Mean (±SD) of hemoglobin concentration (g/dl) from the participants of the intervention and comparison at month 1, 6 and 12 of intervention time such as subdivided in the two subgroups without and with anemia
| Intervention Centers (n = 99) | Comparison Center (n = 37) | ||||
|---|---|---|---|---|---|
| Hemoglobin (g/dl) | MW (±SD) | p-value (a) | MW (±SD) | p-value (a) | p-value (b) |
| All (n = 99) | All (n = 37) | ||||
| Month 1 | 12.78 (1.36) | 12.74 (1.65) | 0.934 | ||
| Month 6 | 12.79 (1.23) | 13.05 (1.33) | 0.481 | ||
| Month 12 | 13.00 (1.24) | 0.352 | 13.05 (1.32) | 0.058 | 0.807 |
| Intervention without Anemia (n = 70) | Comparison without Anemia (n = 22) | ||||
| Month 1 | 13.40 (1.04) | 13.80 (1.09) | 0.110 | ||
| Month 6 | 13.20 (1.01) | 13.65 (1.22) | 0.110 | ||
| Month 12 | 13.32 (1.14) | 0.246 | 13.60 (1.17) | 0.888 | 0.230 |
| Intervention with Anemia (n = 29) | Comparison with Anemia (n = 15) | ||||
| Month 1 | 11.28 (0.77) | 11.20 (0.95) | 0.941 | ||
| Month 6 | 11.80 (1.16) | 12.10 (0.89) | 0.377 | ||
| Month 12 | 12.24 (1.14) | 0.002* | 12.25 (1.13) | 0.001* | 0.931 |
(a) Differences within groups were tested with Friedmann Rang Analysis; (b) Differences between groups were tested with Mann-Whitney-U-Test; groups = centers; Significance * = p < 0.05
Correlation between iron intake and hemoglobin: r = 0.172; p-value: < 0.01