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Table 3 Predicting gastric cancer based on serum PG I level and PG I/II ratio

From: The value of serum pepsinogen levels for the diagnosis of gastric diseases in Chinese Han people in midsouth China

  PG I level PG I/II ratio
Area under the ROC curve 0.880 (0.835-0.925) 0.876 (0.827-0.925)
Optimal cult-off value 70.1 μg/L 6
Sensitivity, % 82.1 82.9
Specificity, % 72.5 76.8
Positive predictive value, % 68.2 64.6
Negative predictive value, % 82.3 82.3
Accuracy, % 77.2 75.8