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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