For group CRT compared with group S , R0 resection rate was 93.8 % versus 92.1 % ( P = .749 ) , with 3-year overall survival rate of 47.5 % versus 53.0 % ( hazard ratio [ HR ] , 0.99 ; 95 % CI , 0.69 to 1.40 ; P = .94 ) and postoperative mortality rate of 11.1 % versus 3.4 % ( P = .049 ) , respectively .