No children showed evidence of treatment-related haemolysis , and the mean maximum decrease in haemoglobin concentration was not associated with the dose of primaquine received-it did not differ significantly compared with placebo ( @ g/L , SD @ ) in the @ mg/kg ( @ g/L , @ ; p = @ ) , @ mg/kg ( @ g/L , @ ; p = @ ) , or @ mg/kg ( @ g/L , @ ; p = @ ) primaquine groups .