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Primary author, year Target population Sample size M/F % females Sex-specific analysis Older, 1993 Patients older than 60 scheduled for major intra-abdominal surgery n = 187NR NR No Older, 1999 Patients scheduled for major intra-abdominal surgery n = 548NR NR No Carlisle, 2007 Patients after repair for unruptured AAA n = 167NR NR No Snowden, 2010 Patients assessed for major surgery with low subjective functional capacity n = 171107/64 37.4% No Wilson, 2010 Patients older than 55 assessed for colorectal, bladder, or kidney cancer n = 847507/340 40.1% Noa Ausania, 2012 Patients scheduled for pancreaticoduodenectomy n = 12467/57 45.9% No Colson, 2012 Patients scheduled for major thoraco-abdominal surgery n = 17251121/604 35.0% No Hartley, 2012 Patients scheduled for elective AAA repair n = 415349/66 15.9% No Prentis, 2012 Patients scheduled for elective AAA repair n = 185161/24 12.9% No Lai, 2013 Patients scheduled for colorectal surgery n = 269NR NR No Lee, 2013 Patients scheduled for colorectal surgery n = 11265/47 42.0% No Bernal, 2014 Patients scheduled for liver transplant surgery n = 223151/72 32.3% Yes Dunne, 2014 Patients scheduled for liver surgery n = 197138/59 29.9% No Neviere, 2014 Patients scheduled for liver transplant surgery n = 263198/65 24.7% No West, 2014 Patients scheduled for major colonic surgery n = 13689/47 34.6% Yes Grant, 2015 Patients scheduled for elective AAA repair n = 506418/88 17.4% No Rose, 2018 Patients scheduled for surgical treatment for colorectal cancer n = 213126/87 41.0% No
a The authors do note a male/female difference in the number of patients classified as “unfit” or “high-risk” and suggest that this should be looked at in further research. However, there was no separate analysis of outcome