The median progression-free survival and overall survival were 6.4 months ( 95 % CI 5.4-7 .5 months ) and 11.9 months ( 95 % CI 9.6-13 .7 months ) for arm A and 6.0 months ( 95 % CI 5.4-7 .0 months ) and 11.0 months ( 95 % CI 8.6-13 .1 months ) for arm B.