3.3 | Pooled results
The pooled sensitivity and specificity of RAC for the endoscopic diagnosis of H. pylori infection were 0.98 (95% CI 0.95 to 0.99) and 0.75 (95% CI 0.54 to 0.88), respectively (Figure 2 ). The pooled PLR and NLR were 3.8 (95% CI 1.9 to 7.7) and 0.03 (95% CI 0.02 to 0.07), respectively (Supplementary Figure 2 ). The DOR was 115 (95% CI 36 to 365) (Supplementary Figure 3 ). The area under the summary receiver operating characteristic curve was 0.98 (95% CI 0.96 to 0.99), suggesting a high overall diagnostic accuracy for H. pylori infection (Figure 3 ).