Table 2: Indirect comparison on the efficacy of chemoradiotherapy versus observation for resected gastric cancer after D2 lymphadenectomy.

CRT versus ObsNumber of trials
in comparison
Hazard ratio (95% CI) value

DFS70.43 (0.33, 0.55)0.00
6*0.43 (0.34, 0.56)0.00
OS60.52 (0.38, 0.71)0.00
5*0.53 (0.38, 0.72)0.00

CRT: chemoradiotherapy, Obs: observation, 95% CI: 95% confidence interval, DFS: disease-free survival, and OS: overall survival. *Subgroup analysis after omitting the trial from Spain.