Chronic kidney disease in Taiwan.

Wen and colleagues use a non-calibrated creatinine concentration to estimate glomerular filtration rate (GFR). Even if such non-calibration has little importance for mortality linked to CKD, it could have serious consequences on prevalence data. 2 These prevalence data are thus not easy to compare with those of the US population, for which the newly expressed Modification of Diet in Renal Disease (MDRD) study equation 3 was used. This equation is applied to standardised creatinine with a factor of 175; Wen and colleagues used the version of the equation with a factor of 186.