The California CABGs Outcomes Reporting Program (CCORP) has issued a two-year report based on 2003-2004 data, which purported "worse-than-expected" outcomes for coronary artery bypass graft surgery at UCSF. In a July 13 message to the Medical Center community, Chief Operating Officer Tomi Ryba explained UCSF's concerns about the CCORP report, citing the inclusion of highly complex cases in the data leading to a higher reported mortality rate for UCSF.