Table 3 Mann–Whitney U comparison of length of stay for open and endovascular AAA repairs

Open surgery

Pre-CPET (n = 103)

13 (13.9 to 19.0)

4 (5.5 to 11.2)

CPET era (n = 100)

CPET-era open (100/100)

10 (10.3 to 13.5)

P < 0.001

3 (3.2 to 4.4)

P < 0.01

CPET-pass (74/100)

10 (10.6 to 14.9)

P < 0.01

3 (2.9 to 4.3)

P < 0.001

CPET-fail (8/100)

11.5 (8.6 to 3.9)

P = 0.25

4.95 (2.1 to 8.4)

P = 0.88

CPET-submaximal (3/100)

11 (−5.4 to 22.0)

P = 0.18

11 (−5.3 to 22.0)

P = 0.59

No-CPET (15/100)

8 (6.6 to 11.1)

P < 0.001

5 (3.1 to 6.1)

P = 0.82

EVAR ^a

Pre-CPET (n = 25)

6 (5.3 to 8.6)

N/A

N/A

CPET era (n = 69)

CPET-era EVAR (69/69)

4 (4.6 to 6.7)

P < 0.05

N/A

N/A

CPET-pass (29/69)

4 (3.6 to 5.7)

P < 0.05

N/A

N/A

CPET-fail (7/69)

4 (2.5 to 8.1)

P = 0.23

N/A

N/A

CPET-submaximal (6/69)

4 (0 to 14.3)

P = 0.56

N/A

N/A

No-CPET (27/69)

4 (4.4 to 8.8)

P = 0.14

N/A

N/A