Predicted efficacy in the groups aged @ weeks ( n = @ , @ events ) or @ weeks ( n = @ , @ events ) at first dose against radiologic pneumonia were @ % ( @ % CI @-@ % ) and @ % ( @ % CI @-@ % ) , against hospitalisation @ % ( @ % CI @-@ % ) and @ % ( @ % CI @-@ % ) , and against mortality @ % ( @ % CI -@ to @ % ) and @ % ( @ % CI -@ to @ % ) respectively .