Over @ months , in the micronutrient group , hemoglobin increased by @ g/dL , retinol by @ g/dL , ferritin by @ g/L , body iron stores by @ mg and the decrease in the prevalence of retinol deficiency was from @ % to @ % , anaemia from @ % to @ % , iron deficiency from @ % to @ % and iron deficiency anaemia from @ % to @ % , while the prevalence of all these deficiencies increased or the changes were not significant in the other two groups .