Fig. 6

Forest plot comparison of ORs of the OS between the dCRT and surgery arms for Asian patients and Western patients. The OR of the 2-year OS for Asian patients was 0.970 (95% CI 0.674–1.395; P = 0.868). Publication bias test: P = 0.835 (Begg’s test); P = 0.807 (Egger’s test). The OR of the 2-year OS for Western patients was 1.522 (95% CI 1.035–2.238; P = 0.033). Publication bias: not available due to lack of studies. Weights are from fixed-effects analyses