subjects consisted of 3,000 consecutive patients and were categorized in four groups including 1,145 patients who had typical angina pectoris ( group i : rest angina 653 , effort angina 230 , and combined rest and effort angina 262 ) , 398 patients with myocardial infarction ( group ii ) , 648 patients with atypical chest pain ( group iii ) , and 809 patients who eventually had diagnostic catheterization for heart diseases other than of ischemic nature ( group iv ) .
C0027051
myocardial infarction
C0018799
heart diseases