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Table 3 Comparison of sensitivity and specificity between criteria for PG test

From: Evaluation of screening tests for autoimmune gastritis in histopathologically confirmed Japanese patients, and re-evaluation of histopathological classification

PG test Number of patients
AIG
Sensitivity (95% CI) Specificity (95% CI)
+
3 + 17 0 85 (62.1–96.8) 100 (54.1–100)
2 +, 1 +, − 3 6
3 +, 2 + 18 2 90 (68.3–98.8) 66.7 (22.3–95.7)
1 +, − 2 4
3 +, 2 +, 1 + 18 2 90 (68.3–98.8) 66.7 (22.3–95.7)
2 4
  1. All patients were classified into four groups (3 +, 2 +, 1 +and −) according to Miki's criteria
  2. PG, pepsinogen; AIG, autoimmune gastritis; 95% CI, 95% confidence interval