Figure 3From: Risk stratification by pre-operative cardiopulmonary exercise testing improves outcomes following elective abdominal aortic aneurysm surgery: a cohort studyOne-way ANOVA of total cost of inpatient stay for open AAA repairs in the pre-CPET and CPET eras. The four bars on the right represent the CPET-outcome breakdown for patients from November 2007 to the present. AAA: abdominal aortic aneurysm; ANOVA: analysis of variance; CPET: cardiopulmonary exercise testing; NS: not significant (in comparison to the median value for the pre-CPET cohort); ***: P < 0.001 (in comparison to the pre-CPET cohort).Back to article page