RESULTS	The mean cost of antibiotics per patient in procalcitonin group was Euro 193.3 + / - 636.6 vs. Euro 372.1 + / - 841.1 ( p = 0.206 ) in the standard group , while the mean cost per hospital day was Euro 8.0 + / - 18.4 vs. Euro 17.8 + / - 36.3 ( p = 0.028 ) .\