No differences were found between arms A and B in 30-day mortality ( 1.8 % v. 2.0 % , respectively ; P = .81 ) , 3-year PFS ( 61.2 % v. 58.9 % , respectively ; P = .76 ) , 3-year OS ( 72.9 % v. 75.8 % , respectively ; P = .32 ) , locoregional failure ( 19.9 % v. 25.9 % , respectively ; P = .97 ) , or distant metastasis ( 13.0 % v. 9.7 % , respectively ; P = .08 ) .