borderline significantp = 0.056
Hb concentrations increased in children in the intervention group (+2.4 ± 1.2 g/L), and slightly decreased in children in the non-intervention group (−0.8 ± 1.2 g/L) with a borderline significant difference in difference estimate of 3.2 g/L (SE 1.7 g/L, p = 0.056) between intervention and non-intervention group.