Clinical usefulness of linked color imaging in identifying Helicobacter pylori infection: A systematic review and meta-analysis

Figure 1  Flow diagram of specific literature searching process.

Figure 2  The assessment of bias risk.

Figure 3 Pooled results of efficacy of white light imaging on Helicobacter pylori infection diagnosis. A-D: Pooled sensitivity (A), specificity (B), positive likelihood ratio and negative likelihood ratio (C). Symmetric receiver operator characteristic curve and area under the curve (D). 95%CI: 95% confidence interval; SROC: Symmetric receiver operator characteristic; PLR: Positive likelihood rate; NLR: Negative likelihood rate.

Figure 4 Pooled results of efficacy of linked color imaging on Helicobacter pylori infection diagnosis. A-D: Pooled sensitivity (A), specificity (B), positive likelihood ratio and negative likelihood ratio (C). Symmetric receiver operator characteristic curve and area under the curve (D). 95%CI: 95% confidence interval; SROC: Symmetric receiver operator characteristic; PLR: Positive likelihood rate; NLR: Negative likelihood rate.