Table 6.

Performance of the MDRD and CG formulas according to gender, age, and GFR levelsa

MDRD GFRCG GFR
MaleFemaleMaleFemale
High GFRb
    age ≥65 y−5.9/−8.0 12.1/16.2 (13.5)−1.6/−1.0 11.5/14.2 (11.6)−14.5/−19.7 10.4/13.4 (17.9)−10.7/−12.4 12.2/13.5 (16.2)
    age <65 y−0.6/−0.2 16.4/18.6 (16.4)−6.1/−5.4 19.3/20.7 (20.3)3.2/4.117.1/19.2 (17.4)2.5/3.7 22.2/22.7 (22.3)
Low GFRc
    age ≥65 y0.5/5.66.7/31.4 (6.7)1.2/7.68.2/34.1 (8.3)−2.3/−0.27.2/32.0 (7.6)−0.1/7.68.0/36.2 (8.0)
    age <65 y1.4/7.08.2/27.5 (8.3)2.3/10.510.7/41.6 (10.9)5.9/24.88.8/35.2 (10.6)8.7/32.810.5/43.6 (13.6)
Overall−0.2/2.712.2/25.1 (12.2)−2.2/1.515.6/30.6 (15.7)1.5/8.013.7/30.7 (13.7)2.5/10.717.6/34.5 (17.7)
  • a Data are presented as bias (absolute/relative), precision (absolute/relative), and (CRMSE), all in ml/min per 1.73 m2 or in %.

  • b GFR ≥60 ml/min per 1.73 m2.

  • c GFR <60 ml/min per 1.73 m2.