Journal of Clinical Pediatrics >
Comparison of different estimation formulas of glomerular filtration rate in children aged 15-18 years with chronic kidney disease
Received date: 2021-09-22
Online published: 2022-12-06
Objective To compare the accuracy and applicability of eight estimation formulas for glomerular filtration rate (GFR) in children aged 15-18 years with chronic kidney disease (CKD). Methods Children with CKD hospitalized from January 2015 to March 2021 wereenrolled. Eight eGFR formulas (update Schwartz formula, CAPA formula, Counahan-Barratt formula, Filler formula, CKD-EPI-Scr2009, CKD-EPI-CysC2012, LMR18, FAS formula) were applied to estimate GFR. The Gates method of 99mTc-DTPA renal dynamic imaging was used as the gold standard GFR (sGFR) determination. The bias, precision and accuracy of each formula were compared, and the diagnostic efficacy of each formula for renal insufficiency was analyzed. Results A total of 88 children were enrolled, including 56 boys and 32 girls, and the median age was 17.0 (16.0-18.0) years. There were 56 cases of CKD stage 1, 18 cases of CKD stage 2, 11 cases of CKD stage 3, 2 cases of CKD stage 4, and 1 case of CKD stage 5. The eGFR in all formulas was positively correlated with sGFR (all P<0.001). The CKD-EPI-Scr2009 formula had the best correlation with sGFR (r=0.73), and the Filler formula had the worst correlation with sGFR (r=0.39). The CAPA, CKD-EPI-Scr2009 and FAS formulas overestimated the GFR on the overall level, while the other formulas underestimated GFR. When sGFR was used as the gold standard, the FAS formula had the smallest bias and the CAPA formula had the largest bias. In terms of precision, the LMR18 formula showed the best precision, followed by the update Schwartz formula, and the CAPA formula showed the worst precision. In terms of accuracy, the LMR18 formula showed the highest accuracy (P30=73.86%). ROC curve analysis showed that the area under the curve (AUC) of the CKD-EPI-Scr2009 formula was the largest (0.907), the sensitivity of CAPA, Filler, and CKD-EPI-CysC2012 formulas were the highest (95.90%), and the specificity of LMR18 and FAS formulas were the highest (85.71%). Conclusions Among the eight eGFR formulas, the accuracy of CysC-based formulas (CAPA, Filler and CKD-EPI-CysC2012 formula) is not as good as Scr-based formulas (update Schwartz, Counahan-Barratt, CKD-EPI-Scr2009, LMR18 and FAS formula), and LMR18 formula has the highest precision and accuracy.
Key words： chronic kidney disease; glomerular filtration rate; formula; child
Qianhuining KUANG , Chunlin GAO , Hong ZHU , Xiao YANG , Yingchao PENG , Zhengkun XIA . Comparison of different estimation formulas of glomerular filtration rate in children aged 15-18 years with chronic kidney disease[J]. Journal of Clinical Pediatrics, 2022 , 40(12) : 905 -911 . DOI: 10.12372/jcp.2022.21e1353
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