Out of the 20 children who were anaemic, the prevalence’s of severe anaemia (Hb < 7 g/dl) was found to be 0.2% (95% CI = 0 - 0.74), mild anaemia (Hb 7.0 - 9.9 g/dl) was 2% (95% CI = 0.63 - 3.37) and moderate anaemia (Hb 10.0 - 10.9g/dl) was 2.80% (95% CI = 1.15 - 4.35) (Figure 2). Here, GSTM1 is linked to anemia (phenotype).