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Table 5 Fisher’s exact test comparison of all-cause mortality

From: Risk stratification by pre-operative cardiopulmonary exercise testing improves outcomes following elective abdominal aortic aneurysm surgery: a cohort study

Cohort Group All-cause deaths Pvalue Odds ratio
CPET era Conservative Rx (n = 42) 12 (28.6%)   
Pre-CPET All (n = 128) 53 0.15 N/A
Open (n = 103) 45 0.10 N/A
EVAR (n = 25) 8 0.79 N/A
CPET era All operated (n = 169) 11 (6.5%) <0.001 0.17 (0.07 to 0.43)
All open (n = 100) 8 (8%) <0.01 0.22 (0.08 to 0.58)
CPET-pass OPEN (n = 74) 6 (8.1%) <0.01 0.22 (0.08 to 0.64)
All EVAR (n = 69) 3 (4.3%) <0.001 0.11 (0.03 to 0.43)
CPET-pass EVAR (n = 25) 0 (0%) <0.01 0.05 (0.005 to 0.85 )
  1. CPET: cardiopulmonary exercise testing; EVAR: endovascular aneurysm repair; Rx: management/treatment.