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Table 2 Quality assessment of included eligible studies using QUADAS-2

From: Diagnosis and prognosis of neutrophil gelatinase-associated lipocalin for acute kidney injury with sepsis: a systematic review and meta-analysis

  1. low risk, high risk, unclear risk, p plasma, u urine
  2. 1 unknown whether a consecutive or random sample of patients enrolled, 2 unknown whether the index test results interpreted without knowledge of the results of the reference standard or unknown whether the threshold was prespecified, 3 unclear whether the reference standard results were interpreted without knowledge of the results of the index test, 4 unknown whether all patients were included in the analysis, # unknown whether enrolling a consecutive or random sample without introduction
  3. QUADAS-2 Quality Assessment of Diagnostic Accuracy Studies 2