In the present study, there was also a significantly higher prescription rate for diuretics (OR = 1.32; 95% CI 1.05-1.66) or ACE inhibitors (OR = 1.31; 95% CI 1.05-1.62) in CHD patients; however, the OR for the use of beta-blockers, which are recommended in the German Hypertension Society guidelines, was even higher (1.68; 95% CI 1.04-1.57). The gene discussed is ACE; the disease is coronary artery disorder.