no statistically significant differences between the responses of blacks and nonblacks were found in the reduction of angina frequency ( 54 percent of blacks improved , 58 percent of nonblacks ) , nitroglycerin consumption ( 60 percent of blacks used less , 66 percent of nonblacks ) , and changes in lifestyle , as measured with the new york heart association scale ( 55 percent of blacks improved , 63 percent of nonblacks ) .
C0002962
angina
C0017887
nitroglycerin