Arm B had better median overall ( Arm B = 10.3 [ 95 % CI 7.5 , 16.8 ] ; Arm A = 3.5 [ 2.8 , 11.7 ] months P = 0.046 ) and progression-free survival ( Arm B = 2.3 [ 1.6 , 3.1 ] ; Arm A = 1.6 [ 0.9 , 1.9 ] months P = 0.11 ) .