In the intention-to-treat ( ITT ) population ( n = 439 ) , the median PFS times were 14.6 ( 95 % CI , 11.6-20 .4 ) , 14.3 ( 95 % CI , 11.8-19 .3 ) and 13.8 months ( 95 % CI , 11.0-17 .5 ) at TPF-CCRT , PF-CCRT and CCRT arms , respectively ( log-rank P = 0.56 ) .