Fig. 5
From: The prognostic value of IDO expression in solid tumors: a systematic review and meta-analysis
Sensitivity analysis of the meta-analysis. a Overall survival. b Time to tumor progression. The vertical axis at 1.98 and 2.25 indicates the overall HR, and the vertical lines on either side of 1.98 and 2.25 indicate the 95% CI. Every hollow round indicates the pooled HR when the left study was omitted in a meta-analysis with a random model. The two ends of every broken line represent the respective 95% CI