GSTM1 and anemia: Of the anemic pregnant women, 171 (42.6%), 213(53.1%), and 17 (4.2%) had mild anemia (Hb ranges 10.0–10.9 g/dL), moderate anemia (Hb ranges 7.0–9.9 g/dL), and severe anemia (Hb < 7.0 g/dL), respectively (Figure 2).