Table 2 Comparison between the two studied groups according to different parameters

CV

 CHF

25 (50%)

2 (13%)

23 (68%)

χ² = 13.235^*

 < 0.001^*

 CAD

23 (46%)

2 (13%)

21 (62%)

χ² = 10.630

0.001^*

 HTN

21 (42%)

6 (38%)

15 (44%)

χ² = 0.196

0.658

 Arrhythmia

4 (8%)

0 (0%)

4 (12%)

χ² = 2.046

^FEp = 0.292

 Valvular disease

7 (14%)

2 (13%)

5 (15%)

χ² = 0.044

^FEp = 1.000

LVEF (%)

 Mean ± SD

51.42 ± 13.88

58.0 ± 9.26

48.32 ± 14.70

U = 

184.0

0.067

 Median (Min. – Max.)

50.0(25.0 – 77.0)

60.0(35.0 – 66.0)

44.50(25.0 – 77.0)

Stroke volume (ml)

 Mean ± SD

49.68 ± 14.61

41.0 ± 11.80

53.76 ± 14.14

U = 

135.50^*

0.004^*

 Median (Min. – Max.)

45.50(33.0 – 79.0)

36.50(33.0 – 71.0)

60.0(34.0 – 79.0)

Peak VO2 (l/min)

 Mean ± SD

1.20 ± 0.51

1.67 ± 0.44

0.98 ± 0.38

U = 

55.50^*

 < 0.001^*

 Median (Min. – Max.)

1.21(0.20 – 2.78)

1.64(0.86 – 2.78)

1.0(0.20 – 2.03)

Peak VO2 (% predicted)

 Mean ± SD

56.36 ± 20.10

64.56 ± 17.42

52.50 ± 20.34

U = 

157.50^*

0.017^*

 Median (Min. – Max.)

50.8 (9.2 – 91.7)

63.15 (34.1 – 91.7)

48.65 (9.2 – 90.2)

Peak WR (watt)

 Mean ± SD

35.72 ± 25.78

55.44 ± 25.12

26.44 ± 20.56

U = 

86.50^*

 < 0.001^*

 Median (Min. – Max.)

36.0(1.0 – 116.0)

54.0(5.0 – 116.0)

31.0(1.0 – 70.0)

Peak WR (% predicted)

 Mean ± SD

24.10 ± 21.30

39.17 ± 27.55

17.01 ± 12.92

U = 

91.0^*

 < 0.001^*

 Median (Min. – Max.)

23.8(0.70 – 127.6)

32.17(4.6 – 127.6)

17.9 (0.70 – 53.6)

Hospitalization

 Mean ± SD

2.40 ± 1.91

0.63 ± 1.15

3.24 ± 1.60

U = 

61.50^*

 < 0.001^*

 Median (Min. – Max.)

2.50 (0.0 – 6.0)

0.0 (0.0 – 4.0)

4.0 (0.0 – 6.0)

ER visits

 Mean ± SD

3.0 ± 1.56

2.56 ± 0.96

3.21 ± 1.75

U = 

228.0

0.346

 Median (Min. – Max.)

2.50 (1.0 – 7.0)

2.0 (1.0 – 5.0)

3.0 (1.0 – 7.0)