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Table 3 Estimates of the group variable parameters resulted from the multiple linear regression models

From: Fluid balance, change in serum creatinine and urine output as markers of acute kidney injury post cardiac surgery: an observational study

Outcome Parameter Unadjusted model Adjusted model
Estimate 95% C.I. p-value Estimate 95% C.I. p-value
CSICU Length of Stay β1 (SCr-, UO-, FOL + vs. SCr-, UO-, FOL-) 0.09 −0.08, 0.26 0.31 0.12 −0.05, 0.29 0.16
β2 (SCr-, UO+, FOL- vs. SCr-, UO-, FOL+) 0.31 0.04, 0.57 0.02 0.44 0.18, 0.70 0.001
β3 (SCr-, UO+, FOL + vs. SCr-, UO+, FOL-) 0.35 0.05, 0.65 0.02 0.08 −0.21, 0.37 0.58
β4 (SCr + vs. SCr-, UO+, FOL+) 0.16 −0.15, 0.46 0.31 0.14 −0.14, 0.41 0.32
Hospital Length of Stay β1 (SCr-, UO-, FOL + vs. SCr-, UO-, FOL-) 0.18 −0.06, 0.41 0.14 0.29 0.04, 0.54 0.02
β2 (SCr-, UO+, FOL- vs. SCr-, UO-, FOL+) −0.05 −0.40, 0.30 0.78 −0.13 −0.52, 0.25 0.49
β3 (SCr-, UO+, FOL + vs. SCr-, UO+, FOL-) 0.39 −0.004, 0.79 0.05 0.30 −0.12, 0.67 0.16
β4 (SCr + vs. SCr-, UO+, FOL+) 0.36 −0.05, 0.77 0.08 0.27 −0.14, 0.67 0.19
  1. SCr+: Meeting the criteria of Change in SCr ≥ 26.5 µmol/L; SCr -: Not meeting the Change in SCr criteria.
  2. UO+: Meeting the criteria of Urine Output ≤0.5 cc/kg/hour for greater than 6 hours; UO-: Not meeting the Urine Output criteria.
  3. FOL+: Meeting the criteria of Fluid Overload, defined as fluid balance ≥ 6.5 cc/kg; FOL-: Not meeting the Fluid Overload criteria.