The overall median ( interquartile range ) number of antibiotic treatment days were @ ( @-@ ) versus @ ( @-@ ) , P = @ ; in patients with positive pulmonary culture , @ ( @-@ ) versus @ ( @-@ ) , P = @ ; and in patients with septic shock , @ ( @-@ ) versus @ ( @-@ ) , P = @ ; with an overall @-day all-cause mortality of @ ( @ % ) versus @ ( @ % ) , P = @ in the PCT versus standard care , respectively .