G6PD and thalassemia: After adjusting by various variables including age, gender, Plasmodium species, parasite density, PKLRR41Q, thalassaemia and haemoglobinopathies, the multivariate analysis revealed that haemoglobin levels were significantly associated with G6PD deficiency/G6PD normal (p < 0.001) and G6PD MahidolG487A/ G6PD Wildtype (p < 0.001) (Table 3).