Abstract
Background
Breast cancer (BC) patients with extended survival show a higher incidence of frailty. This study aimed to develop and validate a novel model combining sociodemographic factors (SF) and disease-related factors (DRF) to identify frailty in BC patients with extended survival.
Methods
This cross-sectional study examined data from 1167 patients admitted to a large urban academic medical centre. Three types of predictive models were constructed in the training set (817 patients): the SF model, the DRF model, and the SF + DRF model (combined model). The model performance and effectiveness were assessed using receiver operating characteristic (ROC) curves, calibration plots and decision curves analysis (DCA). Then the model was subsequently validated on the validation set.
Results
The incidence of frailty in BC patients with extended survival was 35.8%. We identified six independent risk factors including age, health status, chemotherapy, endocrine therapy, number of comorbidities and oral medications. Ultimately, we constructed an optimal model (combined model C) for frailty. The predictive model showed significantly high discriminative accuracy in the training set AUC: 0.754, (95% CI, 0.719–0.789; sensitivity: 76.8%, specificity: 62.2%) and validation set AUC: 0.805, (95% CI, 0.76–0.85), sensitivity: 60.8%, specificity: 87.1%) respectively. A prediction nomogram was constructed for the training and validation sets. Calibration and DCA were performed, which indicated that the clinical model presented satisfactory calibration and clinical utility. Ultimately, we implemented the prediction model into a mobile-friendly web application that provides an accurate and individualized prediction for BC.
Conclusions
The present study demonstrated that the prevalence of frailty in BC patients with extended survival was 35.8%. We developed a novel model for screening frailty, which may provide evidence for frailty screening and prevention.
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Data availability
The data underlying this study are available and researchers may submit data requests to the corresponding author on reasonable request.
Abbreviations
- BC:
-
Breast cancer
- ASP:
-
Acute survival phase
- ESP:
-
Extended survival phase
- PSP:
-
Permanent survival phase
- SF:
-
Sociodemographic factors
- DRF:
-
Disease-related factors
- LASSO:
-
Least absolute shrinkage and selection operator
- AUC:
-
Area under the curve
- ROC:
-
Receiver operating characteristics
- DCA:
-
Decision curve analysis
- NPV:
-
Negative predictive value
- PPV:
-
Positive predictive value
- SE:
-
Standard error
- CI:
-
Confidence interval
- BMI:
-
Body mass index
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Funding
This study was supported by the Fundamental Research Funds for the Central Universities (2042022kf1116), and the National Natural Science Foundation of China (NSFC) (Grant numbers: 82303843).
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All authors participated in the study design. XFL, QT, CXX, and YXM, HL collected and retrieved the data. SRW and DFH analysed the data and AMS evaluated the validity of the analysis. SRW and DFH drafted the manuscript, including the figures and tables. WMQ, XD provided intellectual input and edited the paper. All authors read and approved the final version of the manuscript.
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This cross-sectional study was conducted following the Declaration of Helsinki guidelines, and the protocol was approved by the Medical Ethics Committee of Tian** Cancer Hospital with the ethics approval number bc2021084.
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Wang, S., Huang, D., Liu, X. et al. Development and validation of a prediction model for frailty in breast cancer patients with extended survival. Support Care Cancer 32, 393 (2024). https://doi.org/10.1007/s00520-024-08501-7
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DOI: https://doi.org/10.1007/s00520-024-08501-7