Equations to estimate creatinine excretion rate: the CKD epidemiology collaboration
JH Ix, CL Wassel, LA Stevens, GJ Beck… - Clinical Journal of the …, 2011 - journals.lww.com
Results Mean age was 46 years, 42% were women, and 9% were black. Age, sex, race,
weight, and serum phosphorus improved model fit. Two equations were developed, with or
without serum phosphorus. In external validation, the new equations showed little bias
(mean difference [measured− estimated CER]− 0.7%[95% confidence interval− 2.5% to
1.0%] and 0.3%[95% confidence interval− 2.6% to 3.1%], respectively) and moderate
precision (estimated CER within 30% of measured CER among 79%[76% to 81%] and …
weight, and serum phosphorus improved model fit. Two equations were developed, with or
without serum phosphorus. In external validation, the new equations showed little bias
(mean difference [measured− estimated CER]− 0.7%[95% confidence interval− 2.5% to
1.0%] and 0.3%[95% confidence interval− 2.6% to 3.1%], respectively) and moderate
precision (estimated CER within 30% of measured CER among 79%[76% to 81%] and …