NCIt definition : There was greater than or equal to 50% stenosis (reduction in cross-sectional area)
in two coronary arteries (or greater than or equal to 50% stenosis in the left main
coronary artery). (ACC);
Alternative definition : CDISC: There was one of the following: Stenosis of greater than or equal to 70 percent
reduction in diameter (or 50 percent reduction in cross-sectional area) in two major
epicardial vessels or their major branches; Stenosis of greater than or equal to 50
percent reduction in diameter of the left main with a right dominant or co-dominant
circulation, and no stenosis of greater than or equal to 70 percent reduction in diameter,
or 50 percent reduction in cross-sectional area in the right coronary artery.;