Racial differences in the significance of coronary calcium in asymptomatic black and white subjects with coronary risk factors
Terence M. Doherty, BAa,b,
Weiyi Tang, MDa,b and
Robert C. Detrano, MD, PhD, FACCa,b
a Division of Cardiology, Department of Medicine, Harbor-UCLA Medical Center, Torrance, California, USA
b Saint Johns Cardiovascular Research Center, Torrance, California, USA

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Figure 1 Kaplan-Meier event-free survival curves in black and white subjects during the 70 month follow-up period. Black subjects were significantly more likely than white subjects to suffer a coronary event (p = 0.001; Wilcoxon test).
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