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Table 2 Postoperative outcomes in the matched cohort

From: Acute kidney injury following on-pump or off-pump coronary artery bypass grafting in elderly patients: a retrospective propensity score matching analysis

variable A group B group p value
(n = 466) No. (%) (n = 466) No. (%)
In-hospital
 Mortality 11(2.4) 9(1.9) 0.821
 MI 19(4.1) 15(3.2) 0.6
 Stroke 11(2.4) 7(1.5) 0.475
 Respiratory failure 20(4.3) 15(3.2) 0.491
 Pneumonia 26(5.6) 21(4.5) 0.549
 AKI 197 179 0.532
  Stage 1 139(29.8) 131(28.1)  
  Stage 2 40(8.6) 35(7.5)  
  Stage 3 18(3.9) 13(2.8)  
 In-hospital dialysis 13(2.8) 8(1.7) 0.377
 RBC transfusion 196(42.1) 175(37.6) 0.181
 DSWI 10(2.1) 7(1.5) 0.624
 LCOS 21(4.5) 25(5.4) 0.650
 IABP application 18(3.9) 19(4.1) 1
Longer-term
 Lost to follow-up 14(3.1) 10(2.2) 0.535
 New onset of dialysis 5(1.1) 3(0.7) 0.708
 Mortality 33(7.5) 37(8.3) 0.753
  1. MI myocardial infarction, AKI acute kidney injury, RBC red blood cell, DSWI deep sternal wound infection, LCOS low cardiac output syndrome, IABP intra-aortic balloon pump