The significant variables based on the final regression model were previous LGITB admission (OR 2.11, 95% CI 1.21–3.69), presence of ischemic heart disease (OR 2.59, 95% CI 1.24–5.40), DRE findings of blood (OR 3.31, 95% CI 1.99–5.86), presence of syncope or dizziness (OR 2.51, 95% CI 1.55–4.09), SBP 120-134 mmHg (OR 1.85, 95% CI 1.05–3.26), 90-119 mmHg (OR 2.44, 95% CI 1.30–4.56), < 90 mmHg (OR 17.8, 95% CI 2.45–129); initial Hb 11–12.9 g/dL (OR 2.89, 95% CI 1.61–5.21), 10–10.9 g/dL (OR 4.78, 95% CI 2.24–1.023) and < 10 g/dL (OR 30.5, 95% CI 15.1–61.5). This evidence concerns the gene GSTM1 and coronary artery disorder.