GSTM1 and hemorrhage: The decreased Hb (3.95 ± 1.94 g/dL) in type 1 hemorrhage had a greater degree of decline than the decrease in type 2 (1.94 ± 1.56 g/dL) and in type 3 hemorrhage (2.47 ± 1.37 g/dL; p = 0.001).