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Table 4 Serum AFP in patients with HCC and controls (Levels > 200 ng/ml is considered positive)

From: Comparative diagnostic efficacy of serum squamous cell carcinoma antigen in hepatocellular carcinoma

  Serum AFP Levels > 200 ng/ml Serum SCCA levels > 0.368 ng/ml Combination of serum AFP > 200 ng/ml and SCCA >0.368 ng/ml
  Cases Control Cases Control Cases Control
Positive 31 0 45 22 26 0
Negative 29 30 15 8 34 30
Sensitivity 51.7% 75% 43.3%
Specificity 100% 26.7% 100%
Positive predictive value 100% 67.2% 100%
Negative predictive value 49.2% 65.2% 53.1%
Accuracy 67.7% 58.8% 62.2%