HP and hyperinsulinemic hypoglycemia, familial, 4: In this model, baseline haemoglobin level, village, age group, malaria parasites on blood film, iron status, haptoglobin concentration (a measure of haemolysis in the last 10 d), G6PD A type deficiency, and haptoglobin genotype (p = 0.0009, coefficient = −4.2) emerged as significant predictors of haemoglobin level at the end of the malaria season (Table 2).