| CI | Confidence interval, the lower and upper limits of significance |
| TT | Triple therapy |
| H. pylori | Helicobacter pylori |
| MD | Mean difference |
| N/A | Not available |
| p | Probability |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses [42,43] |
| PZN | Polaprezinc |
| RCT | Randomized controlled trial |
| SD | Standard deviation |
| WOS | Web of Science |
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