Clinical cure rates in the < @g/mL , @g/mL to < @g/mL , and@g/mL vancomycin trough level groups were @ % ( @/@ ) , @ % ( @/@ ) , and @ % ( @/@ ) , respectively ( p = @ ) , and the frequencies of patient death were @ % ( @/@ ) , @ % ( @/@ ) , and @ % ( @/@ ) , respectively ( p = @ ) .