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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Am J Kidney Dis. 2008 Nov 20;53(1):121–128. doi: 10.1053/j.ajkd.2008.08.010

Table 2. Distribution of estimated glomerular filtration rate and CKD stage at screening.

United States Brazil Canada Overall
eGFR (ml/min)
 N 3000 612 498 4110
 Mean ± SD 50 ± 16.5 53 ± 16.5 50 ± 15.9 51 ± 16.5
 Range 16.1 - 152.7 17.5 - 116.9 18.0 - 104.3 16.1 - 152.7
CKD Stage
 Stage 1 (eGFR 90+) 67 (2.2 %) 15 (2.5 %) 8 (1.6 %) 90 (2.2 %)
 Stage 2 (eGFR 60 - 89) 662 (22.1 %) 173 (28.3 %) 117 (23.5 %) 952 (23.2 %)
 Stage 3 (eGFR 30 - 59) 2064 (68.8 %) 397 (64.9 %) 335 (67.3 %) 2796 (68.0 %)
 Stage 4 (eGFR 15 - 29) 207 (6.9 %) 27 (4.4 %) 38 (7.6 %) 272 (6.6 %)