Abstract
Aims
Diabetic retinopathy is the leading cause of blindness in people with type 2 diabetes. To enable primary care physicians to identify high-risk type 2 diabetic patients with diabetic retinopathy at an early stage, we developed a nomogram model to predict the risk of developing diabetic retinopathy in the Xinjiang type 2 diabetic population.
Methods
In a retrospective study, we collected data on 834 patients with type 2 diabetes through an electronic medical record system. Stepwise regression was used to filter variables. Logistic regression was applied to build a nomogram prediction model and further validated in the training set. The c-index, forest plot, calibration plot, and clinical decision curve analysis were used to comprehensively validate the model and evaluate its accuracy and clinical validity.
Results
Four predictors were selected to establish the final model: hypertension, blood urea nitrogen, duration of diabetes, and diabetic peripheral neuropathy. The model displayed medium predictive power with a C-index of 0.781(95%CI:0.741–0.822) in the training set and 0.865(95%CI:0.807–0.923)in the validation set. The calibration curve of the DR probability shows that the predicted results of the nomogram are in good agreement with the actual results. Decision curve analysis demonstrated that the novel nomogram was clinically valuable.
Conclusions
The nomogram of the risk of developing diabetic nephropathy contains 4 characteristics.
that can help primary care physicians quickly identify individuals at high risk of developing DR in patients with type 2 diabetes, to intervene as soon as possible.
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Data availability
The data used to support the findings of this study are available from the corresponding author upon request.
Abbreviations
- T2DM:
-
Type 2 diabetes mellitus
- DR:
-
Diabetic Retinopathy
- DN:
-
Diabetic nephropathy
- DPN:
-
Diabetic peripheral neuropathy
- ROC:
-
Receiver operating characteristic
- DCA:
-
Decision curve analysis
- BMI:
-
Body mass index
- HbA1c:
-
Glycosylated hemoglobin A1c
- Scr:
-
Serum creatinine
- BUN:
-
Blood urea nitrogen
- LDL-C:
-
Low-density lipoprotein
- HDL-C:
-
High-density lipoprotein
- TC:
-
Total cholesterol; TG: triglycerides
- IGF-1:
-
Insulin-like growth factor-1
- IGFBP-3:
-
Insulin-like growth factor binding protein-3
- FBG:
-
Fasting blood glucose
- OR:
-
Odds ratio
- MDRD:
-
Modification of diet in renal disease
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Funding
This work was supported by the fund project in the state key laboratory of Pathogenesis, Prevention, and Treatment of high incidence diseases in Central Asia. (Name of the fund: The role of TCF7L2/Wnt/GLP-1 signaling pathway and environmental factors in the pathogenesis of type-2 diabetes in Kazakhs (No.SKL-HIDCA-2019–15).
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The study was performed by the ethical guidelines of the 1975 Declaration of Helsinki and was reviewed and approved by the human research ethics committee of the Affiliated Hospital of Xinjiang Medical University.
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Yang, J., Jiang, S. Development and validation of a model that predicts the risk of diabetic retinopathy in type 2 diabetes mellitus patients. Acta Diabetol 60, 43–51 (2023). https://doi.org/10.1007/s00592-022-01973-1
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DOI: https://doi.org/10.1007/s00592-022-01973-1