GSTM1 and anemia (phenotype): The prevalence of anaemia (Hb < 10 g/dl) was 24% (66/278) in the ISTi arm and 29% (112/392) in the PCD arm at 6 months (aPR = 0.86 (95%CI, 0.66-1.13), p = 0.280) 28% (70/254) and 30% (114/378) respectively at 12 months (aPR = 0.98 (95% CI, 0.81–1.18), p = 0.810); Table 4.