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. 2016 Feb 29;31(5):798–806. doi: 10.1093/ndt/gfv454

FIGURE 1:

FIGURE 1:

(A) Difference between estimated (FAS equation) and measured GFR versus the average of both methods. Quantile regression lines (2.5th, 50th and 97.5th percentiles) are shown, without excluding any data. Median difference = 1.9 mL/min/1.73 m². (B) Difference between estimated (Schwartz up to age 18 years, CKD-EPI beyond 18 years) and measured GFR versus the average of both methods. Quantile regression lines (2.5th, 50th and 97.5th percentiles) are shown, without excluding any data. Median difference = 5.4 mL/min/1.73 m².