ceftazidime plus vancomycin was significantly more effective than piperacillin plus vancomycin , considering all febrile episodes ( 79 percent versus 61 percent , p = 0.001 ) , documented infections ( 79 percent versus 57 percent , p = 0.004 ) , gram-negative infections ( 88 percent versus 47 percent , p = 0.001 ) , and bacteremias ( 81 percent versus 51 percent , p = 0.01 ) .
C0007559
ceftazidime
C0015967
febrile