At the end line , median ( IQR ) nutrient densities were significantly higher in the CFR group than in the non-CFR group for iron -LSB- i.e. , @ mg/@ kcal ( @-@ @ mg/@ kcal ) compared with @ mg/@ kcal ( @-@ @ mg/@ kcal ) -RSB- and niacin -LSB- i.e. , @ mg/@ kcal ( @-@ @ mg/@ kcal ) compared with @ mg/@ kcal ( @-@ @ mg/@ kcal ) -RSB- .