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Table 2 Summary of the number of included males and females in recent studies with more than 100 participants that investigated the use of CPET for surgical risk assessment before major surgery

From: Why women are not small men: sex-related differences in perioperative cardiopulmonary exercise testing

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 = 187

NR

NR

No

Older, 1999

Patients scheduled for major intra-abdominal surgery

n = 548

NR

NR

No

Carlisle, 2007

Patients after repair for unruptured AAA

n = 167

NR

NR

No

Snowden, 2010

Patients assessed for major surgery with low subjective functional capacity

n = 171

107/64

37.4%

No

Wilson, 2010

Patients older than 55 assessed for colorectal, bladder, or kidney cancer

n = 847

507/340

40.1%

Noa

Ausania, 2012

Patients scheduled for pancreaticoduodenectomy

n = 124

67/57

45.9%

No

Colson, 2012

Patients scheduled for major thoraco-abdominal surgery

n = 1725

1121/604

35.0%

No

Hartley, 2012

Patients scheduled for elective AAA repair

n = 415

349/66

15.9%

No

Prentis, 2012

Patients scheduled for elective AAA repair

n = 185

161/24

12.9%

No

Lai, 2013

Patients scheduled for colorectal surgery

n = 269

NR

NR

No

Lee, 2013

Patients scheduled for colorectal surgery

n = 112

65/47

42.0%

No

Bernal, 2014

Patients scheduled for liver transplant surgery

n = 223

151/72

32.3%

Yes

Dunne, 2014

Patients scheduled for liver surgery

n = 197

138/59

29.9%

No

Neviere, 2014

Patients scheduled for liver transplant surgery

n = 263

198/65

24.7%

No

West, 2014

Patients scheduled for major colonic surgery

n = 136

89/47

34.6%

Yes

Grant, 2015

Patients scheduled for elective AAA repair

n = 506

418/88

17.4%

No

Rose, 2018

Patients scheduled for surgical treatment for colorectal cancer

n = 213

126/87

41.0%

No

  1. aThe 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