Table 4: Sensitivity and specificity of estimating equations.

mGFR > 80 mL/min/1.73 m2
SENSSPEC

Normal
 CG-CrCl51%67%
 MDRD eGFR74%47%
 CKD-EPI eGFR81%40%

Class I Obesity
 CG-CrCl47%69%
 MDRD eGFR81%46%
 CKD-EPI eGFR86%23%

Class II/III Obesity
 CG-CrCl45%92%
 MDRD eGFR100%17%
 CKD-EPI eGFR100%17%

Abbreviations: mGFR—measured glomerular filtration rate; SENS—sensitivity; SPEC—specificity; CG-Cockcroft-Gault equation; CrCl—creatinine clearance; MDRD—modification of diet in renal disease; CKD-EPI—chronic kidney disease epidemiology collaboration; eGFR—estimated glomerular filtration rate.