Table 2.

Accuracy of Serum Pepsinogen Test with Different Cut-Off Values for Diagnosis of Corpus Atrophy

PGI, PGI/II cut-off values, %
	PGI ≤ 70 ng/mL un PGI/II ≤ 3	PGI ≤ 30 ng/mL un PGI/II ≤ 2
Sensitivity (95% CI)	50.0 (1.2 - 98.7)	50.0 (1.2 - 98.7)
Specificity (95% CI)	73.5 (65.8 - 80.3)	90.9 (85.3 - 94.9)
PPV (95% CI)	2.3 (0.5 - 9.0)	6.7 (1.6 - 23.7)
NPV (95% CI)	99.1 (96.6 - 99.7)	99.3 (97.2 - 99.8)
Overall accuracy	73.2 (65.6 - 79.9)	90.4 (84.7 - 94.5)

PG, pepsinogen; PPV, positive predictive value; NNP, negative predictive value; 95% CI, 95% confidence interval.