Table 3: Performance of 24-hour creatinine clearance.

Bias (mL/min/1.73 m2)IQR (mL/min/1.73 m2)P30

Normal
(BMI < 30) ( 𝑛 = 9 )
2 3 . 6 ± 9 . 2 38.822%
Class I Obesity (BMI 30–35) ( 𝑛 = 8 ) 1 7 . 8 ± 6 . 5 23.975%
Class II/III Obesity (BMI > 35) ( 𝑛 = 7 ) 6 . 1 ± 4 . 2 10.086%

Abbreviations: Bias—(measured GF-estimated GFR); IQR—interquartile range; BMI—body mass index (kg/m2); P30—percentage of estimated readings within 30 percent of measured readings.