TABLE 1.

Mean difference between absolute (ml/min) and indexed (ml/min/1.73 m²) GFR and body mass index (BMI).

BMI)		Mean absolute	Mean indexed)	Mean difference between
(kg/m2)	n	GFR	GFR (Dubois)	indexed and absolute GFR
18.5–25	40	44.47	43.38	–1.09
>30	81	81.73	70.94	−18.2*
>40	33	110.17	87.76	−24.85*

*P < 0.0001 (Delanaye et al., 2005).