Table 2—

Measures of reproducibility

Mean (range)Within-subject SDBetween-subject SDWithin-subject CVDiscriminant ratio (95% CI)Discriminant ratio: P versus iohexol clearanceDiscriminant ratio: P versus cystatin C
Plasma creatinine (μmol/l)75 (39–131)7.419.09.9%2.5 (1.9–3.2)<0.0010.065
Creatinine clearance (ml · min · 1.73 m−2)91 (40–166)17.629.619.2%1.5 (1.1–2.1)<0.001<0.001
GFR-CG (ml · min · 1.73 m−2)102 (37–203)10.133.79.9%3.3 (2.5–4.2)<0.0010.43
Cystatin C (mg/l)0.98 (0.52–2.03)0.10.38.9%3.4 (2.6–4.4)<0.001
Iohexol clearance (ml · min · 1.73 m−2)84 (35–132)4.723.25.6%4.9 (3.9–6.3)