[A meta-analysis on the relations between Helicobacter pylori infection and chronic urticaria].

Objective: To investigate the relationship between Helicobacter pylori (HP) infection and the development of chronic urticaria.

Methods: Published case-control studies which concerned HP infection related chronic urticaria were searched in Wanfang, CNKI, CQVIP Chinese databanks and PubMed. Meta-analysis was applied to analyze the pooled odds ratio (OR) and 95% confidence interval (CI).