Abstract
Purpose
There are few studies on the establishment of diagnostic models for diabetic nephropathy (DN) in in type 2 diabetes mellitus (T2DM) patients based on biomarkers. This study was to establish a model for diagnosing DN in T2DM.
Methods
In this cross-sectional study, data were collected from the Second Hospital of Shijiazhuang between August 2018 to March 2021. Totally, 359 eligible participants were included. Clinical characteristics and laboratory data were collected. LASSO regression analysis was used to screen out diagnostic factors, and the selected factors were input into the decision tree for fivefold cross validation; then a diagnostic model was established. The performances of the diagnosis model were evaluated by the area under the receiver operator characteristic curve (AUC), sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy. The diagnostic performance of the model was also validated through risk stratifications.
Results
Totally, 199 patients (55.43%) were diagnosed with DN. Age, diastolic blood pressure (DBP), fasting blood glucose, insulin treatment, mean corpuscular hemoglobin concentration (MCHC), platelet distribution width (PDW), uric acid (UA), serum creatinine (SCR), fibrinogen (FIB), international normalized ratio (INR), and low-density lipoprotein cholesterol (LDL-C) were the diagnostic factors for DN in T2DM. The diagnostic model presented good performances, with the sensitivity, specificity, PPV, NPV, AUC, and accuracy being 0.849, 0.969, 0.971, 0.838, 0.965, and 0.903, respectively. The diagnostic model based on the stratifications also showed excellent diagnostic performance for diagnosing DN in T2DM patients.
Conclusion
Our diagnostic model with simple and accessible factors provides a noninvasive method for the diagnosis of DN.
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Data availability
All data that support the findings of this study are available from the corresponding author upon reasonable request.
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YX designed the study and wrote the manuscript. XC, KL and GC collected, analyzed, and interpreted the data. YX critically reviewed, edited, and approved the manuscript. All authors read and approved the final manuscript.
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The study was approved by the ethics committee of the Second Hospital of Shijiazhuang (No. Sey2021005).
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Xing, Y., Chai, X., Liu, K. et al. Establishment and validation of a diagnostic model for diabetic nephropathy in type 2 diabetes mellitus. Int Urol Nephrol 56, 1439–1448 (2024). https://doi.org/10.1007/s11255-023-03815-7
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DOI: https://doi.org/10.1007/s11255-023-03815-7