Fig 1.
Flow chart of study screening.
Table 1.
Principal characteristics of all eligible studies.
Fig 2.
(a) Risk of bias summary. (b) Risk of bias graph.
Table 2.
Methodological quality assessment of all eligible studies.
Fig 3.
Forest plot of clinical efficacy.
Fig 4.
Forest plot of sensitivity analysis of clinical efficacy.
Fig 5.
Funnel plot of clinical efficacy.
Fig 6.
Funnel plot of clinical efficacy after excluding two studies.
Fig 7.
Forest plot of improvement of gastric mucosa under gastroscopy.
Fig 8.
Forest plot of improvement of histopathologic variations of the gastric mucosa.
Fig 9.
Forest plot of H pylori inhibition rate.
Fig 10.
Forest plot of safety evaluation.