Silver Book Fact
Medicare data show that the number of coronary artery bypass graft procedures increased from 158,000 in 1992 to a peak of 190,000 in 1996 and then fell to 152,000 in 2003, while the number of hospitals performing the procedure increased.
Wilson C, Fisher E, Welch H, Siewers A, et al. U.S. Trends in CABG Hospital Volume: The effect of adding cardiac surgery programs. Health Aff. 2007; 26(1): 162-168. http://content.healthaffairs.org/content/26/1/162.abstract