12-12-2009, 10:29 AM
An investigator is evaluating the outome of coronary artey bypass grafting conducting by 2 surgeon in the community in the past year. Surgeon X who operated exclusively at tertiary care faciltiy, has a 30-day operative mortality of 3%. Surgeon Y, who operates exclusively in commounity care facilty, has a 30-day operative mortality 1%.The differecne in operative mortality between them is significant (p