Table 3.
Comparison of the performances of culture, PCR and real-time PCR for the diagnosis of H. pylori infection
| Parameter | Result (%) | |||
|---|---|---|---|---|
| Culture (gastric biopsy-based) |
PCR (gastric biopsy-based) |
Real-time PCR (gastric biopsy-based) |
Real-time PCR (gastric juice-based) |
|
| Sensitivity | 90.48% (95/105)* | 92.38% (97/105)* | 97.14% (102/105)** | 100% (105/105) |
| Specificity | 100% (73/73) | 100% (73/73) | 100% (73/73) | 100% (73/73) |
| Positive predictive value | 90.48% (95/105)* | 92.38% (97/105)* | 97.14% (102/105)** | 100% (105/105) |
| Negative predictive value | 87.95% (73/83)* | 90.12% (73/81)* | 96.05% (73/76)*** | 100% (73/73) |
*: P<0.05, **: P=0.081, ***: P=0.086.