Predicted efficacy in the groups with intervals of @ month ( n = @ , @ events ) or @ months ( n = @ , @ events ) between doses against radiologic pneumonia were @ % ( @ % CI @-@ % ) and @ % ( @ % CI @-@ % ) , against hospitalisation @ % ( @ % CI @-@ % ) and @ % ( @ % CI @-@ % ) , and against mortality @ % ( @ % CI -@ to @ % ) and @ % ( @ % CI -@ to @ % ) respectively .