Abstract
Clinicians need improved prediction models to estimate time to kidney replacement therapy (KRT) for children with chronic kidney disease (CKD). Here, we aimed to develop and validate a prediction tool based on common clinical variables for time to KRT in children using statistical learning methods and design a corresponding online calculator for clinical use. Among 890 children with CKD in the Chronic Kidney Disease in Children (CKiD) study, 172 variables related to sociodemographics, kidney/cardiovascular health, and therapy use, including longitudinal changes over one year were evaluated as candidate predictors in a random survival forest for time to KRT. An elementary model was specified with diagnosis, estimated glomerular filtration rate and proteinuria as predictors and then random survival forest identified nine additional candidate predictors for further evaluation. Best subset selection using these nine additional candidate predictors yielded an enriched model additionally based on blood pressure, change in estimated glomerular filtration rate over one year, anemia, albumin, chloride and bicarbonate. Four additional partially enriched models were constructed for clinical situations with incomplete data. Models performed well in cross-validation, and the elementary model was then externally validated using data from a European pediatric CKD cohort. A corresponding user-friendly online tool was developed for clinicians. Thus, our clinical prediction tool for time to KRT in children was developed in a large, representative pediatric CKD cohort with an exhaustive evaluation of potential predictors and supervised statistical learning methods. While our models performed well internally and externally, further external validation of enriched models is needed.
Original language | English (US) |
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Pages (from-to) | 985-994 |
Number of pages | 10 |
Journal | Kidney international |
Volume | 104 |
Issue number | 5 |
DOIs | |
State | Published - Nov 2023 |
Funding
Data in this paper were collected by the Chronic Kidney Disease in Children (CKiD) prospective cohort study with clinical coordinating centers (principal investigators) at Children's Mercy Hospital and the University of Missouri—Kansas City (BAW) and Children's Hospital of Philadelphia (SLF), Central Biochemistry Laboratory (GJS) at the University of Rochester Medical Center, and data coordinating center (Alvaro Muñoz and DKN) at the Johns Hopkins Bloomberg School of Public Health. The CKiD study is funded by the National Institute of Diabetes and Digestive and Kidney Diseases, with additional funding from the National Institute of Child Health and Human Development, and the National Heart, Lung, and Blood Institute (U01-DK-66143, U01-DK-66174, U24-DK-082194, U24-DK-66116). FMW received support from the NIH T32 institutional training grant (T32 HL007024). The CKID website is located at https://www.statepi.jhsph.edu/ckid, and a list of CKiD collaborators can be found at https://statepi.jhsph.edu/ckid/site-investigators/ and is presented in Supplementary Table S6. The authors acknowledge Drs. Alvaro Muñoz and Christopher Cox for critical insight and feedback on cross-validation methods. The authors deeply appreciate Dr. Franz Schaefer for providing permission to use ESCAPE study data used in the paper by Furth et al.4 for the external validation analysis. Data in this paper were collected by the Chronic Kidney Disease in Children (CKiD) prospective cohort study with clinical coordinating centers (principal investigators) at Children’s Mercy Hospital and the University of Missouri—Kansas City (BAW) and Children’s Hospital of Philadelphia (SLF), Central Biochemistry Laboratory (GJS) at the University of Rochester Medical Center, and data coordinating center (Alvaro Muñoz and DKN) at the Johns Hopkins Bloomberg School of Public Health. The CKiD study is funded by the National Institute of Diabetes and Digestive and Kidney Diseases , with additional funding from the National Institute of Child Health and Human Development , and the National Heart, Lung, and Blood Institute (U01-DK-66143, U01-DK-66174, U24-DK-082194, U24-DK-66116). FMW received support from the NIH T32 institutional training grant (T32 HL007024). The CKID website is located at https://www.statepi.jhsph.edu/ckid , and a list of CKiD collaborators can be found at https://statepi.jhsph.edu/ckid/site-investigators/ and is presented in Supplementary Table S6 . The authors acknowledge Drs. Alvaro Muñoz and Christopher Cox for critical insight and feedback on cross-validation methods. The authors deeply appreciate Dr. Franz Schaefer for providing permission to use ESCAPE study data used in the paper by Furth et al. 4 for the external validation analysis.
Keywords
- kidney failure
- kidney replacement therapy
- pediatric chronic kidney disease
- pediatric nephrology
- prediction
- risk stratification
ASJC Scopus subject areas
- Nephrology