Outcome versus volume in coronary-bypass operations

Relationship of hospital size, case volume, and cost for coronary artery bypass surgery: Analysis of 12,774 patients operated on in Massachusetts during fiscal years 1995 and 1996

“…case volume, geographic location, the presence of a residency teaching program, and payer. [1][2][3][4][5][6][7][8][9][10][11][12][13] Institution or program case volume (and often, by implication, hospital size) is widely believed to be inversely related to both mortality ("practice makes perfect") and cost ("economies of scale").…”