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. Author manuscript; available in PMC: 2016 Jan 25.
Published in final edited form as: Clin Chem. 2015 Aug 3;61(10):1265–1272. doi: 10.1373/clinchem.2015.243030

Table 2.

Percent bias in different populations across clinically relevant eGFR ranges. Means with 95% confidence intervals that include zero are not significantly different from iothalamate corrected mGFR.

eGFR Potential Donors CKD Patients Kidney Recipients Other Organ Recipients
Overall
eGFRCr −11.6 (−14, −8.9) −0.8 (−3.0, 1.3) 0.5 (−2.2, 3.2) 1.3 (−2.2, 4.9)
eGFRCys 4.8 (1.4, 8.1) 0.1 (−1.9, 2.2) −5.4 (−7.8, −3.0) −7.7 (−10, −5.4)
eGFRCr-Cys −2.7 (−5.4, 0) −1.9 (−3.6, −0.2) −4.8 (−7.0, −2.6) −5.6 (−7.8, −3.5)
≥90 mL/min/1.73m2
eGFRCr −5.8 (−9.7, −1.9) 5.0 (1.5, 8.6) 29 (11.6, 46.4) 13.5 (5.5, 22)
eGFRCys 8.5 (4.9, 12.1) 8.2 (4.7, 11.8) 14.5 (4.8, 24.2) 7.4 (0.8, 14)
eGFRCr-Cys −1.4 (−4.5, 1.8) 3.1 (−0.1, 6.3) 6.7 (−3.4, 16.7) 5.5 (−0.6, 12)
60–89 mL/min/1.73m2
eGFRCr −15 (−18.9, −11.2) −4.0 (−7.4, −0.7) 7.1 (2.1, 12.2) 6.4 (−2.0, 15)
eGFRCys −7.9 (−15.2, −0.6) −2.4 (−5.7, 0.9) 3.6 (0.3, 7) −2.6 (−6.8, 1.5)
eGFRCr-Cys −4.3 (−9.7, 1.1) −5.0 (−7.5, −2.4) −0.7 (−3.9, 2.6) −4.7 (−8.6, −0.8)
45–59 mL/min/1.73m2
eGFRCr −20.5 (−27.3, −13.7) −3.5 (−9.3, 2.3) −6.3 (−9.7, −2.9) −0.5 (−6.5, 5.6)
eGFRCys −17.2 (−29.5, −4.8) −7.3 (−12.3, −2.4) −9.7 (−12.7, −6.8) −7.2 (−12, −2.4)
eGFRCr-Cys −18.5 (−28.7, −8.3) −4.2 (−8.6, 0.1) −7.9 (−10.8, −4.9) −7.5 (−11, −3.7)
30–44 mL/min/1.73m2
eGFRCr −2.5 (−9.0, 4.1) −2.9 (−7.9, 2.0) −4.5 (−10, 1.5)
eGFRCys −5.5 (−11, 0.0) −11.3 (−16, −6.8) −14.2 (−19, −9.7)
eGFRCr-Cys −3.7 (−8.7, 1.3) −7.8 (−12, −3.7) −6.9 (−11, −2.5)
<30 mL/min/1.73m2
eGFRCr 0.3 (−6.2, 6.8) 5.2 (−10, 21) −5.1 (−16, 6.0)
eGFRCys 4.4 (−1.9, 11) −6.1 (−17, 5.1) −15.5 (−21, −10)
eGFRCr-Cys 0.7 (−4.6, 6) −0.1 (−12, 12) −7.5 (−15, −0.1)