Table 3 The diagnostic table of the AKI events defined by the computerized algorithm.

From: The computerized algorithm for renal assessment improves diagnostic accuracy of renal impairment in hospitalized patients

Characteristics

AKI present

AKI absent

Total

Test positive

379 (TP)

13 (FP)

392

Test negative

64 (FN)

1095 (TN)

1159

Total

443

1108

1551

 

Sensitivity: 85.6%

Specificity: 98.8%

 

Cause analysis for FN AKI diagnosis

Cause

Number of events/total events

Percentage of events

AKI events occurred in OPD

45/64

70.3%

Increases in creatinine was < 1.5 times compared to prior test

19/64

29.6%

Cause analysis for FP AKI diagnosis

Cause

Number of events/total events

Percentage of events

Fluctuated serum creatinine levels caused by hemodialysis sessions

13/13

100%

  1. AKI, acute kidney injury; TP, true positive; FP, false positive; FN, false negative; TN, true negative, OPD, outpatient department.
  2. Statistical analysis was performed using chi square test.
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