GSTM1 and liver disorder: The constructed logistic regression model is defined by the following equation: logit (P) = −3.1907 + 0.053 × Heart rate + 5.248 × History of peptic ulcer + 2.38 × Concomitant liver disease + 2.61 × Concomitant malignancy − 0.0013 × Platelet count −0.059 × Hemoglobin (Hb) (Table 4).