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Table 3 H. pylori sensitivity and specificity depending on grade of body gastritis with atrophy

From: Additional corpus biopsy enhances the detection of Helicobacter pylori infection in a background of gastritis with atrophy

Ca degree of gastritis with atrophy at body Normal to mild Moderate to severe
n=164 n=141 n=23
CLOtest Antrum   
 Sensitivity 95.66 (88.62-98.60) 83.33 (50.88-97.06)
 Specificity 100.00 (90.94-100.00) 100.00 (67.86-100.00)
 PPV 100.00 (94.79-100.00) 100.00 (65.55-100.00)
 NPV 92.45 (80.93-97.55) 84.61 (53.66-97.29)
 Accuracy 97.16 91.30
CLOtest Body   
 Sensitivity 100.00 (95.00-100.00) 100.00 (69.87-100.00)
 Specificity 100.00 (90.94-100.00) 100.00 (67.85-100.00)
 PPV 100.00 (95.00-100.00) 100.00 (69.87-100.00)
 NPV 100.00 (90.94-100.00) 100.00 (67.85-100.00)
 Accuracy 100.00 100.00
CLOtest Antrum + Body   
 Sensitivity 100.00 (95.00-100.00) 100.00 (69.87-100.00)
 Specificity 100.00 (90.94-100.00) 100.00 (67.85-100.00)
 PPV 100.00 (95.00-100.00) 100.00 (69.87-100.00)
 NPV 100.00 (90.94-100.00) 100.00 (67.85-100.00)
 Accuracy 100.00 100.00
Histology Antrum   
 Sensitivity 96.74 (90.09-99.15) 83.33 (50.88-97.06)
 Specificity 100.00 (90.94-100.00) 100.00 (67.86-100.00)
 PPV 100.00 (94.84-100.00) 100.00 (65.55-100.00)
 NPV 94.23 (83.08-98.50) 84.61 (53.66-97.29)
 Accuracy 97.87 91.30
Histology Body   
 Sensitivity 100.00 (95.00-100.00) 91.67 (59.75-99.56)
 Specificity 100.00 (90.94-100.00) 100.00 (67.86-100.00)
 PPV 100.00 (95.00-100.00) 100.00 (67.86-100.00)
 NPV 100.00 (90.94-100.00) 91.67 (59.75-99.56)
 Accuracy 100.00 95.65
Histology Antrum + Body   
 Sensitivity 100.00 (95.00-100.00) 91.67 (59.75-99.56)
 Specificity 100.00 (90.94-100.00) 100.00 (67.86-100.00)
 PPV 100.00 (95.00-100.00) 100.00 (67.86-100.00)
 NPV 100.00 (90.94-100.00) 91.67 (59.75-99.56)
 Accuracy 100.00 95.65