Figure 2.
Bivariate correlation of sugar probes with glomerular filtration rate. No association was observed between the glomerular filtration rate and the fractional recovery of mannitol (ρ = −0.062, P =0.627) or lactulose (ρ = −0.102, P =0.426). The permeability index (ρ = −0.030, P =0.818) did also not correlate with the glomerular filtration rate in the bivariate Spearman rank‐order correlation. GFR: glomerular filtration rate, MDRD. Formula according to the Modification of Diet in Renal Disease Study (Levey et al. 1999).