Prognostic Value of Peroxiredoxin-1 Expression in Patients with Solid Tumors: a Meta-Analysis of Cohort Study

Figure 5

Begg’s funnel plots for assessment of potential publication bias in studies of PRDX1 in patients with solid tumor. Each study represented by one circle. The horizontal line represented the pooled effect estimate. (a) Funnel plot of publication bias for overall survival. (b) Funnel plot adjusted with trim-and-fill methods for overall survival. (c) Funnel plot of publication bias for disease-free survival. (d) Funnel plot adjusted with trim-and-fill methods for studies reporting disease-free survival.

(a)

(b)

(c)

(d)