GSTM1 and coronary artery disorder: In the multivariable logistic regression, after adjusting for patient clinical severity, variables that were associated with a higher pre-transfusion Hb level (≥8 g/dL) for transfusion were a history of coronary artery disease (OR: 2.09; 95% CI: 1.29–3.41), the presence of acute bleeding in the ED (OR: 2.44; 95% CI: 1.53–3.94), and an older age (OR: 1.02/year; 95% CI: 1.01–1.04).