Additional file 1: of The role of definitive chemoradiotherapy versus surgery as initial treatments for potentially resectable esophageal carcinoma

Figure S1. Forest plot comparison of ORs of the OS between the dCRT and surgery arms for stage I ESCC patients. The OR of the 2-year OS was 1.021 (95% CI 0.488–2.134; P = 0.957). Publication bias test: P = 0.308 (Begg’s test); P = 0.042 (Egger’s test). Weights are from fixed-effects analyses. (TIF 450 kb)