The relation between the IMPR and the patients’ characteristics (terciles for age, LVEF and EXT1 or pentiles for BMI)

Categorical variablesMean IMPR (%) ± SDP
Age

≤ 56 years

> 56 years but ≤ 64 years

> 64 years

22.7 ± 32

24.4 ± 32

27.7 ± 46.7

0.8681
Gender

Male

Female

27.3 ± 43.5

23.9 ± 34.4

0.4961
BMI

≤ 25

> 25 but ≤ 30

> 30 but ≤ 35

> 35 but ≤ 40

> 40

22.4 ± 35

24.1 ± 33.8

31 ± 47.7

18.7 ± 23.7

15.2 ± 27.6

0.5928
LVEF

≤ 42%

> 42% but ≤ 50%

> 50%

20.2 ± 32.8

29.6 ± 44.3

23.9 ± 30.6

0.0268
EXT1

≤ 5.7 METs

> 5.7 METs but ≤ 8.4 METs

> 8.4 METs

39.7 ± 50.4

26.9 ± 27.2

7.8 ± 18.4

< 0.0001