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Table 6 Comparison of all individual episodes of oliguria between those that were associated with progression to RIFLE I[Cr] and those that were not

From: Oliguria as predictive biomarker of acute kidney injury in critically ill patients

  AKI-Cr No AKI-Cr P
Episodes of oliguria 30 457  
Duration of oliguria 3 (1-4) 2 (1-3.75) 0.14
HR 90 (79-100) 82 (70-95) 0.02
MAP 75 (65-80) 78 (70-87.5) 0.01
CVP 11 (10-13) 9 (7-12) 0.02
On vasopressor or inotrope 65% (47-82) 32% (28-37) 0.0002
Action
None 17% (3-32) 52% (47-57) 0.0002
Fluid 43% (25-62) 26% (22-30) 0.05
Diuretic 47% (28-66) 26% (22-30) 0.02
Increase/start vasopressor or inotrope 17% (3-31) 24% (17-30) 0.51
  1. Continuous variables reported as medians and inter-quartile range and compared with Mann-Whitney U test. Categorical variables are reported as percentages with 95% confidence interval and compared with Fisher's exact test. AKI-Cr, acute kidney injury defined by changes in serum creatinine; CVP, central venous pressure; HR, heart rate; MAP, mean arterial pressure.