Table 1.

Identified low GFR was usually not transient

GFR IncreasedNo ChangeGFR Decreased
>1510 to 155 to 105 to −55 to 1010 to 15>15
Initial GFR <8010%8%15%45%12%6%5%
Initial GFR 60 to 8010%8%15%41%13%6%6%
Initial GFR 30 to 5910%8%15%48%11%5%4%
Initial GFR <3010%4%11%63%8%2%0.7%
  • A total of 54,576 individuals with a MDRD GFR <80 ml/min per 1.73 m2 had another measurement at least 30 days later. Only 18% of those with initially identified low GFR had an increase of 10 ml/min per 1.73 m2 or more with subsequent testing. The proportion of people with transient reductions in GFR was not appreciably higher in those with an initial GFR between 60 and 79 ml/min per 1.73 m2 compared with an initial GFR <30 ml/min per 1.73 m2.