Table 1 Criteria for Studies Included in this Meta-Analysis
Population (P) | Exposure (E) | Comparison (C) | Outcomes (O) | Type of Study (T) |
|---|---|---|---|---|
The target population in this meta-analysis was all people (without any restriction). | The desired exposure in the present meta-analysis was periodontal diseases. | The comparison group was people without periodontal diseases. | The desired outcome was the occurrence of H. Pylori infection. | All analytical cross-sectional and case-control studies were considered. |