At 7 days after randomisation , median maximum relative change in creatinine concentrations was 00 % ( IQR 00-184 ) in the alert group and 06 % ( 00-175 ) in the usual care group ( p = 081 ) ; 87 ( 72 % ) patients in the alert group and 70 ( 59 % ) patients in usual care group had received dialysis ( odds ratio 125 [ 95 % CI 090-174 ] ; p = 018 ) ; and 71 ( 59 % ) patients in the alert group and 61 ( 51 % ) patients in the usual care group had died ( 116 [ 081-168 ] ; p = 040 ) .