Table 4.

Publication bias results of the selected articles

Evaluation Items	t	95% CI		P
Two‐year OS	−1.85	−53.427	39.835	0.315
Five‐year OS	−0.89	−120.902	105.122	0.538
Two‐year DFS	−0.33	−74.295	70.575	0.799
Five‐year DFS	0.43	−102.668	109.804	0.743

CI, confidence interval; DFS, disease‐free survival; HR, hazard ratio; OS, overall survival.