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Helicobacter pylori infection and peptic ulcer disease in cirrhotic patients: An updated meta-analysis
1Department of Gastroenterology and Hepatology, Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.
Background:
Peptic ulcer (PU) is more prevalent in patients with liver cirrhosis. The role of Helicobacter pylori (H. pylori) infection in the pathogenesis of PU in patients with cirrhosis is still not elucidated.
Aim:
To perform a meta-analysis on the prevalence of H. pylori infection and PU and their association in liver cirrhosis patients.
Methods:
We searched PubMed, EMBASE, Web of Science, Cochrane, CNKI, Wangfang, and CQVIP databases from inception to July 10, 2020. Odds ratio (OR) and 95% confidence interval (CI) were pooled using a random-effects model. The statistical heterogeneity among studies (I 2-index), subgroup analyses, regression analysis, sensitivity analysis, and the possibility of publication bias were assessed.
Results:
A total of 14 studies (13 cross-sectional studies; 1 cohort study) involving 2775 individuals (611 cases with PU and 2164 controls) were included in our meta-analysis. The prevalence of PU in patients with cirrhosis was 22%. The prevalence of H. pylori infection was 65.6% in cirrhotic patients with PU, and 52.5% in those without. The pooled overall OR was 1.73 (95%CI: 1.16-2.56, I 2 = 66.2%, P < 0.001, Z = 2.7, P z < 0.05). We did not find the cause of heterogeneity in the subgroup analyses and meta-regression analysis except for one study. Funnel plot did not show significant publication bias. The results of Begg's test and Egger's test indicated no evidence of substantial publication bias (P Begg = 0.732, P Egger = 0.557).
Conclusion:
There is a weakly positive association between H. pylori infection and PU in patients with liver cirrhosis. It is suggested that H. pylori infection may play a role in the pathogenesis of PU in liver cirrhotic patients.
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