KDIGO Class EcrCi Hbss % Hbsc %
G5 Kidney failure <15 0 0.0% 0 0.0%
G4 Severely decreased 15-29 0 0.0% 0 0.0%
G3b Moderately to Severely decreased 30-34 0 0.0% 1 4.8%
G3a Mildly to  Moderately decreased 45-59 3 3.8% 1 4.8%
G2 Mildly decreased 60-89 17 21.5% 6 28.6%
G1 Normal or high ≥90 59 74.7% 13 61.9%
*KDIGO, Kidney disease improving global outcomes [26].
Table 2: The distribution of estimated GFR of subjects using the KDIGO 2012*.