Fewer patients receiving remote ischemic preconditioning received renal replacement therapy ( @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- ; absolute risk reduction , @ % ; @ % CI , @ % -@ % ; P = @ ) , and remote ischemic preconditioning reduced intensive care unit stay ( @ days -LSB- interquartile range , @-@ -RSB- ) vs @ days ( interquartile range , @-@ ) ( P = @ ) .