Evaluation of ELISA for detecting anti-CagA antibody in sera of Helicobacter pylori infected patients
| Genotype | |||
|---|---|---|---|
| cagA+ | cagA− | Total | |
| Borderline results are included as positive results.Sensitivity is 36/41, or 87.8%; specificity is 21/21, or 100%; predictive value of a positive test is 36/36, or 100%; predictive value of a negative test is 21/ 26, or 80.8%; accuracy is 36 + 21/62, or 91.9%. | |||
| ELISA, enzyme linked immunosorbent assay. | |||
| ELISA test + | 36 | 0 | 36 |
| ELISA test − | 5 | 21 | 26 |
| Total | 41 | 21 | 62 |