Sensitivity, specificity, positive and NPVs of the reference tests
| Test | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | |
|---|---|---|---|---|---|
| Non-invasive tests | LIAISON Helicobacter pylori SA | 90.1 (85 to 93) | 92.4 (88 to 95) | 91.6 (87 to 95) | 90.1 (86 to 93) |
| UBT | 90.9 (86 to 94) | 99.2 (97 to 100) | 99.2 (97 to 100) | 90.8 (86 to 94) | |
| Invasive tests | RUT | 99.0 (96 to 100) | 92.4 (88 to 95) | 90.5 (86 to 94) | 99.2 (97 to 100) |
| Histology | 95.5 (92 to 98) | 95.4 (92 to 98) | 94.6 (91 to 97) | 96.2 (93 to 98) |
NPV, negative predictive value; PPV, positive predictive value; RUT, rapid urease test; UBT, urea breath test.
Values are given as percentages and 95% CIs.