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Table 1 Summary of baseline characteristics of included studies in meta-analysis

From: The effectiveness of intra-aortic balloon pump for myocardial infarction in patients with or without cardiogenic shock: a meta-analysis and systematic review

Authors (Year)

Trial name

Comparison

Number of patients

Age (years)

Male (%)

Clinical symptom

Hypertension

Prior MI

Prior PCI

Prior CABG

Prior stroke

Thiele (2012, 2013) [12, 13]

IABP-SHOCK II

IABP

301

70 (58, 78)a

67.1

MI complicated by CS

213/296 (72.0 %)

71/300 (23.7 %)

63/299 (21.1 %)

20/300 (6.7 %)

24/300 (8.0 %)

without IABP

299

69 (58, 76)a

70.6

199/299 (66.6 %)

61/299 (20.4 %)

52/299 (17.4)%

12/299 (4.0 %)

20/299 (6.7 %)

Gu (2011) [24]

--

IABP

51

67.4 (9.6)

56.9

Acute STEMI or non-STEMI without CS

35 (68.6 %)

2 (3.9 %)

NR

NR

NR

without IABP

55

66.6 (8.0)

65.5

33 (60.0 %)

3 (5.5 %)

NR

NR

NR

Patel (2011) [23]

CRISP AMI

IABP

161

56.1 (48.3, 64.3)a

82.0

Acute STEMI without CS

39 (24.2 %)

NR

3 (1.9 %)

NR

0

without IABP

176

57.7 (48.6, 66.4)a

81.8

60 (34.1 %)

NR

2 (1.1 %)

NR

1 (0.6 %)

Perera (2010, 2013) [26, 27]

BCIS-1

IABP

151

71 (9)

81

High risk PCI without CS

95 (63 %)

113 (75 %)

17 (11 %)

25 (17 %)

12 (8 %)

without IABP

150

71 (10)

78

91 (61)

108 (73 %)

14 (9 %)

20 (13 %)

11 (7 %)

Prondzinsky (2010) [28]

IABP SHOCK

IABP

19

62.1 (38, 82)b

74

Acute MI complicated by CS

8 (42.1 %)

4 (21.1 %)

NR

NR

NR

without IABP

21

66.1 (49, 82)b

81

10 (47.6 %)

5 (23.8 %)

NR

NR

NR

van't Hof (1999) [29]

--

IABP

118

59 (10)

84

High risk PCI without CS

NR

17 (14 %)

NR

3 (3 %)

NR

without IABP

120

56 (11)

84

NR

16 (13 %)

NR

7 (6 %)

NR

Stone (1997) [25]

PAMI-II TRIAL

IABP

211

64.7 (11.9)

74.9

High risk MI without CS

116 (54.8 %)

45 (21.4 %)

NR

16 (7.5 %)

NR

without IABP

226

63.7 (13.0)

75.2

126 (55.7 %)

49 (21.7 %)

NR

13 (5.9 %)

NR

  1. Abbreviations: IABP intra-aortic balloon pump, CS cardiogenic shock, MI myocardial infarction, STEMI ST-elevation MI, PCI percutaneous coronary intervention, CABG coronary artery bypass graft, NR no reported
  2. Data presented in mean (SD), median (IQR)a, or mean (range)b