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Table 2 Diagnostic performance of and changes in urinary indices at ICU admission andafter 24 hours

From: Diagnostic accuracy of early urinary index changes in differentiating transient frompersistent acute kidney injury in critically ill patients: multicenter cohortstudy

Patients with AKI Overall population (n= 147) Patients without diuretics (n= 97) Patients without sepsis(n= 60)
Urinary indices at ICU admission   
   FeNa 0.59 (0.49 to 0.69) 0.54 (0.41 to 0.66) 0.59 (0.42 to 0.75)
   FeUrea 0.50 (0.41 to 0.60) 0.53 (0.41 to 0.65) 0.64 (0.49 to 0.79)
   U/P urea 0.57 (0.48 to 0.67) 0.56 (0.45 to 0.68) 0.59 (0.45 to 0.74)
   U/P creatinine 0.55 (0.45 to 0.65) 0.53 (0.41 to 0.65) 0.61 (0.46 to 0.77)
Urinary indices at H24   
   FeNa 0.61 (0.51 to 0.71) 0.64 (0,52 to 0,76)* 0,56 (0,40 to 0.72)
   FeUrea 0.51 (0.40 to 0.62) 0.57 (0.43 to 0.70) 0.56 (0.39 to 0.72)
   U/P urea 0.65 (0.55 to 0.75)* 0.65 (0.53 to 0.76)* 0.67 (0.51 to 0.83)*
   U/P creatinine 0.58 (0.48 to 0.69) 0.56 (0.43 to 0.69) 0.58 (0.41 to 0.76)
Changes in urinary indices between H0 and H24  
   FeNa 0.59 (0.49 to 0.70) 0.58 (0.45 to 0.71) 0,59 (0,40 to 0.78)
   FeUrea 0.57 (0.47 to 0.68)* 0.58 (0.44 to 0.72) 0.61 (0.43 to 0.78)
   U/P urea 0.61 (0.51 to 0.71)* 0.60 (0.47 to 0.73) 0.65 (0.48 to 0.81)
   U/P creatinine 0.51 (0.49 to 0.62) 0.52 (0.40 to 0.65) 0.53 (0.33 to 0.70)
  1. Diagnostic performance of urinary indices at ICU admission and after 24 hours,and changes in urinary indices over the first 24 hours in the ICU forseparating transient from persistent acute kidney injury. Data are areas underthe receiver-operating characteristic curves (± 95%). AKI, acute kidneyinjury; FeNa, fractional excretion of sodium ([U/P sodium]/[U/Pcreatinine])×100; FeUrea, fractional excretion of urea ([U/P urea]/[U/Pcreatinine])×100; H0, ICU admission; H24, 24 hours; U/P, urinary/plasma.*P < 0.05. Bold data represent AUC that differ statisticallyfrom 0.5.