After @ weeks , the mean ( @ % CI ) percent changes from baseline in weekly hot flash frequency were as follows : placebo , -@ % ( -@ to -@ ) ; raloxifene , -@ % ( -@ to @ ) ; paroxetine , -@ % ( -@ to -@ ) ; the mean ( @ % CI ) percent changes in hot flash severity were as follows : placebo , -@ % ( -@ to -@ ) ; raloxifene , -@ % ( -@ to @ ) ; paroxetine , -@ % ( -@ to @ ) .