TABLE 2.
Performance of IgG and urease tests and histology compared with culturea
| Param-eter | Salivary IgG test
|
Serum IgG test | Histology | Urease | |
|---|---|---|---|---|---|
| Cutoff OD, 0.21 | Cutoff OD, 0.12 | ||||
| Sensitivity | 84 (66–95) | 100 (89–100) | 100 (89–100) | 90 (74–98) | 94 (79–99) |
| Specificity | 90 (76–97) | 51 (35–68) | 51 (35–68) | 85 (69–94) | 90 (76–97) |
| Accuracy | 87 (77–94) | 73 (61–83) | 73 (61–83) | 87 (77–94) | 91 (82–97) |
| PPV | 86 (69–96) | 62 (47–75) | 62 (47–75) | 82 (65–93) | 88 (72–97) |
| NPV | 88 (73–96) | 100 (83–100) | 100 (83–100) | 92 (78–98) | 95 (82–99) |
a
Values are percentages. Data in parenthesis are 95% confidence intervals. Nonoverlapping confidence intervals are statistically different at a P < 0.05.