Figure 2. Forest plots illustrate the association between IL-10 gene polymorphisms and BD in Chinese Han. For each study, the odds ratio (OR) and 95% confidence interval (CI) values are indicted. The size of each box is proportional to the weight of each study. The squares and horizontal lines correspond to the OR and 95% CI, and the diamond represents the summary OR and 95% CI. A: The rs1800871 T allele versus C allele. B: The rs3021094 A allele versus C allele. C: The rs3790622 T allele versus C allele.