Fig 1.
Retrieval process and selection process.
Table 1.
The characteristics of the included studies.
Fig 2.
Risk of bias and applicability concerns.
Fig 3.
Risk of bias and applicability concerns.
Fig 4.
Forest sensitivity map (red diamond) and 95% CI (blue horizontal line).
Fig 5.
Specific (red diamond) forest map and 95% CI (blue horizontal line).
Fig 6.
Forest map of LR+.
Fig 7.
Forest map of LR-.
Fig 8.
Forest map of DOR.
Fig 9.
SROC with a 95% confidence interval.
Fig 10.
Deeks’ funnel plot for testing publication bias.
Fig 11.
Galbraith diagram for heterogeneity analysis.
Fig 12.
After subgroup analysis—Forest plot of the DOR.
Table 2.
Inferred by egger method that there is no publication bias(P-value = 0.291).