Fig 1.
The figure displays the information retrieval process for valuable articles and exclusion process of irrelative articles for this research.
Table 1.
Characteristics of included studies.
Fig 2.
Forest plot of pooled relative risk for one-year OS from eligible studies.
The area of each square represents the weighting, and the positions of each square demonstrate the risk ratio point estimate. Horizontal lines represent 95% confidence interval (CI). M-H = Mantel-Haenszel. Events = patients died from any cause within one year.
Fig 3.
Forest plot of pooled relative risk for three-year OS from eligible studies.
The area of each square represents the weighting, and the positions of each square demonstrate the risk ratio point estimate. Horizontal lines represent 95% confidence interval (CI). M-H = Mantel-Haenszel. Events = patients died from any cause within three years.
Fig 4.
Forest plot of pooled relative risk for five-year OS from eligible studies.
The area of each square represents the weighting, and the positions of each square demonstrate the risk ratio point estimate. Horizontal lines represent 95% confidence interval (CI). M-H = Mantel-Haenszel. Events = patients died from any cause within five years.
Fig 5.
Forest plot of pooled relative risk for three-year DFS from eligible studies.
The area of each square represents the weighting, and the positions of each square demonstrate the risk ratio point estimate. Horizontal lines represent 95% confidence interval (CI). M-H = Mantel-Haenszel. Events = recurrence or metastasis happened within three years.
Fig 6.
Funnel plots for publication bias of one-year OS (a), three-year OS (b), five-year OS (c), and three-year DFS (d).
The vertical line indicates the pooled estimate of the overall risk ratio, with the sloping lines representing the expected 95% CI for a given standard error.