Table 2.
Helicobacter pylori infection prevalence according to country, gender, age groups, and study years
| Study or subgroup | Number of studies | Prevalence (95% CI) (%) | Sample | Heterogeneity test | P‐value | Publication bias test |
|---|---|---|---|---|---|---|
| I2 (%) | P‐value (Eggers test) | |||||
| Total | 19 | 56.5 (0.460–0.669) | 9614 | 99.13 | <0.001 | 0.7470 |
| Gender (male) | 11 | 51.3 (0.393–0.633) | 4622 | 98.42 | <0.001 | 0.4944 |
| Gender (female) | 11 | 51 (0.406–0.615) | 3734 | 97.39 | <0.001 | 0.6898 |
| Age group (children and adolescents) | 9 | 65.3 (0.529–0.777) | 4285 | 98.58 | <0.001 | 0.4038 |
| Age group (adults) | 7 | 56.9 (0.353–0.785) | 939 | 98.52 | <0.001 | 0.5312 |
| Study year (before 2000) | 5 | 78.6 (0.686–0.886) | 760 | 91.19 | <0.001 | 0.0013 |
| Study year (2001–2020) | 14 | 49.7 (0.399–0.595) | 8854 | 98.79 | <0.001 | 0.8133 |
In studies with both children and adolescents and adults as respondents, data were extracted by segregating the results according to two age groups, if possible.
CI, confidence interval.