Fig. 4From: Appraising growth differentiation factor 15 as a promising biomarker in digestive system tumors: a meta-analysisInfluence analysis of outlier studies. a The overall pooled diagnostic dataset for DST; b the combined diagnostic dataset for GDF-15 levels in PC; (c) the overall prognostic dataset of OS for DST; d the combined prognostic dataset of OS, and CSS (e) for GDF-15 in CRCBack to article page