tokens: SCr increases > or = 0 . 5 mg / dL occurred in 4 . 4 % ( 9 of 204 patients ) after iopamidol and 6 . 7 % ( 14 of 210 patients ) after iodixanol ( P = 0 . 39 ) , whereas rates of SCr increases > or = 25 % were 9 . 8 % and 12 . 4 % , respectively ( P = 0 . 44 ) .