ACE and coronary artery disorder: There were no statistically substantial distinctions in the age, composite risk factors (coronary heart disease and hypertension), smoking status, systolic blood pressure, white blood cell, high-density lipoprotein and low-density lipoprotein levels, and medication use (angiotensin-converting enzyme inhibitor/angiotensin receptor antagonist and β-blockers) between the three groups (p > 0.05).