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Table 1 Baseline characteristics of the study population

From: The predictive value of the prognostic nutritional index for postoperative acute kidney injury in patients undergoing on-pump coronary bypass surgery

Variable AKI(−)
(n = 248)
AKI (+)
(n = 88)
P-value
Age (years) 63.3 ± 9 66.5 ± 7 0.003
Female n (%) 59 (24) 25 (28) 0.390
History of COPD n (%) 21 (9) 15 (17) 0.025
Hypertension n (%) 57 (23) 25 (28) 0.309
Diabetes mellitus n (%) 73 (29) 46 (52) < 0.001
Hyperlipidemia n (%) 45 (18) 24 (27) 0.069
Current smoking n (%) 56 (23) 20 (23) 0.977
IABP usage n (%) 5 (2) 5 (6) 0.082
Positive inotrope usage n (%) 44 (18) 33 (38) < 0.001
Preoperative diuretic usage n (%) 32 (13) 22 (26) 0.008
Mortality 2 (1) 11 (13) < 0.001
Dialysis requirement(%) 0 (0) 7 (8) < 0.001
  1. Abbreviations: AKIN acute kidney injury, IABP intraaortic baloon pump, COPD chronic obstructive pulmonary disease