Fig. 3From: Prognostic value of the C-reactive protein to albumin ratio in colorectal cancer: an updated systematic review and meta-analysisFilled funnel plots for publication bias test of overall survival, the open circles are the real studies; the closed circles are the “filled” studies; the open diamond is the mean effect size of the real studies; the closed diamond is the mean effect size adding the “filled” studiesBack to article page