The Ki-@ score fell after treatment but there was no significant difference between the reduction in the two arms ( anastrozole @ % ( @ % CI = @-@ @ ) before , @ % ( @ % CI = @-@ @ ) after , n = @ ; fulvestrant @ % ( @ % CI = @-@ @ ) before , @ % ( @ % CI = @-@ @ ) after , n = @ ) or between the reduction in Ki-@ in clinical responders and non-responders .