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Showing 1 to 7 of 7 for “"Concordance Index"”.
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Survival analysis for lung cancer patients
… radiomic features. While the best model's concordance index using clinical input is 0.589, the concordance index of the best model using a combination of clinical and radiomic features is 0.657. We performed rigorous cross-examination on each feature's relationship and the model for each …
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Comparison of Some Statistical and Machine Learning Models for Continuous Survival Analysis
… Brier score (IBS), Area Under the Curve and Concordance index. Our findings shows consistent dominance of Neural Network (NN) and Random Survival Forest (RSF) models across multiple metrics for both datasets. Specifically, Neural Network demonstrates remarkable performance, closely followed …
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Comparative Analysis of Discrimination and Calibration Accuracy of Discrete Survival, Random Forests, and Neural Networks in Health-Related Survival Prediction Models
… model fit and discrimination (measured by the Concordance index and area under curve) to evaluate predictive accuracy. These methods were applied to data sets: Breast cancer, age at first alcohol intake and CRASH-2. The discrete-time neural network had the best prediction performance as …
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Statistical model selection techniques for the cox proportional hazards model: a comparative study
… measures. These performance measures were concordance index, integrated area under the curve, and , and R2 . To carry out this exercise, a multicentre clinical trial data set was used. A simulation study was also implemented for this comparison. To develop a Cox proportional model, a …
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Identification and Characterization of De Novo Germline Tp53 Mutation Carriers In Families With Li-Fraumeni Syndrome
… from five different US cohorts. We used the concordance index (AUC), observed:expected ratios (OE) and Brier score (BS) to measure our model’s discrimination, calibration and accuracy, respectively. We use our model to analyze 101 families recently collected from the Clinical Cancer Genetic …
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A Comparative Analysis of Machine Learning Models and Traditional Statistical Models for Continuous-Time Survival Analysis
… Model performance was assessed using the concordance index (C-index), integrated Brier score (IBS), and Time-dependent Area Under the Curve (AUC) across three secondary datasets with different characteristics: a breast cancer dataset obtained from the SEER Program of the National Cancer …
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Prognostic Significance of Chromosome 9p Deletion in Clear Cell Renal Cell Carcinoma
… further their predictive accuracies expressed by concordance Index C.<br/><br/>Immunohistochemistry was employed on the same cohort to assess if copy number loss or LOH was associated with reduced protein expression by certain genes on chromosome 9p. The genes examined were those reported to be …